Extended Mastery Perks

This article is about the Main Character's Extended Mastery Perks. For recruitable characters' Extended Mastery Perks, see Character Extended Mastery Perks.

About classes | Class list | Skill list | Extended Mastery

Once a class reaches level 20, its Extended Mastery is unlocked, offering a variety of bonuses through perks. The bonuses are acquired by spending Extended Mastery Points (EMP) to add stars to the perks. The total number of stars you can apply to each class at once is based on your current rank.

See Character Extended Mastery Perks for the perks accessible to characters who are not the MC.

Obtaining EMP

You gain 1 EMP per 36,000 EXP acquired on a Level 20 class.
50 CP or 20 Gems can be converted to 1 EMP without limit.
No resources are refunded when removing stars.

Important Points

EMP are shared between classes; gaining EMP on one class does not restrict where you spend it.
On the other hand: Stars/Bonuses are not shared between classes (eg. buying the ATK perk on Fighter will not affect ATK on Berserker)
You will need 40-100 EMP for each Row IV class you unlock, so do not spend too many on Row III classes.
Never spend EMP on Row I or Row II classes as they see very little use compared to Row III and IV.
EMP has an upper limit of 999 for how much you can hold free at once. Once you reach this upper limit, you won't gain any EXP until you spend EMP, thus allowing you to earn EMP once again.

Perk list

Unlike other characters' Extended Mastery Perks, the third star for each perk is usually the most efficient for the Main Character.
Thus, it is usually worth investing three stars anywhere you're willing to invest one star.
For general use, the highest priority perks are ATK, Double Attack, Debuff Success (if relevant) and HP.

Name	Rank	☆1	☆2	☆3	Prio	Notes
ATK Bonus	-	500	1500	3000	★★★★	Free 3000 base ATK with no strings attached. Should always be your first purchase.
DEF Bonus	-	1%	3%	5%	★★	A solid perk combined with the HP perk. Recommended for classes you bring to challenging content and HL.
HP Bonus	-	300	600	1000	★★★	Quite a large amount of health, great to keep MC alive. High priority when using Splitting SpiritSacrifice 50% of current HP to increase charge bar by 3% for every 250 HP lost. or together with the DEF Bonus perk. Situational pick for Sword Master as increased HP interferes with Slime Blasting in a party of four.
Heal Bonus	-	1%	3%	5%	★★	Limited usefulness since most classes don't use heals. Most useful for party heals so Bishop, Sage and Superstar with Nine-Realm Harp may want to consider obtaining this perk. Note that Summons that heal is affected by this EMP since the healing originates from the Main Character. For example, 4★ Lucifer.
Skill DMG Bonus	-	1%	3%	5%	★	Low priority. Most useful for Sidewinder and Hermit until near the damage cap. Will allow reaching damage cap with less debuffs on your foes.
Overdrive Curbed Bonus	-	1%	3%	5%	★	Low priority. Mode bar will increase less in normal mode and decrease more in overdrive mode.
Debuff Resistance Bonus	-	1%	3%	5%	★	Low priority since VeilAll allies gain VeilDebuffs will be nullified (1 time) "Veil" is an unofficial name used by the wiki for this status effect. Its actual in-game name is "Immune.". and ClarityRemove 1 debuff from all parties. exists. Can be useful for Superstar when combined with a Harp, Soul SoloistHarp: Inflict 30% Debuff Res. DownDebuff resistance is lowered Strength: 30%Base Accuracy: 200% on all foes. All allies gain 30% Debuff Res. UpDebuff resistance is boosted Strength: 30%Base Accuracy: 200%Duration: 3 turns. Fonic Rod: Inflict 20% Debuff Res. DownDebuff resistance is lowered Strength: 20%Base Accuracy: 200% on all foes. All allies gain 20% Debuff Res. UpDebuff resistance is boosted Strength: 20%Base Accuracy: 200%Duration: 3 turns. Other weapons: Inflict 5% Debuff Res. DownDebuff resistance is lowered Strength: 5%Base Accuracy: 90% on all foes. All allies gain 5% Debuff Res. UpDebuff resistance is boosted Strength: 5%Base Accuracy: 90%Duration: 3 turns., 4★ Medusa (Summon) and this perk which can reach over 80% debuff resistance total.
Debuff Success Bonus	-	1%	3%	5%	★★★★	High priority on classes where you cast debuffs. Excellent from Omega battles and onward. As the debuff resistance of bosses keeps increasing this perk becomes more and more valuable. Even if 5% sounds small it can be the difference between winning and losing. Performs even better when combined with Debuff Res. DownDebuff resistance is lowered .
Elemental ATK Bonus	-	1%	3%	5%	★★	Elemental ATK Bonus is situational as it only works for the specific element. The more elements a class is used with, the lower the priority of this bonus. However, for specific cases it can be valuable. Such as when a class is mostly used with one element like Wind Dancer, together with a Superlative Weapon or for the current Unite and Fight.
Elemental Resistance Bonus	-	1%	3%	5%	★	Arguably the worst EMP perk set, Elemental DMG Cut Bonus is an investment that only works when MC has Hostility Up as it only applies to MC. However, assuming it stacks additively, means that those unfortunate enough to not have Carbuncles can live without an 3★ summon - but the rest of their team will still die. Extremely unrecommended.
C.A. DMG Bonus	-	1%	3%	5%	★★★	Due to new CA damage cap which is harder to hit, not as bad as before. Recommended when you want to hit cap CA on HL bosses' DEF. Especially useful in fights without debuffs like Ultimate Bahamut (Raid).
Specialty WPN 1 DMG Bonus	-	1%	3%	5%	★★	All Specialty WPN DMG Bonuses can be extremely powerful or borderline useless, depending on the grid used. Very powerful when used with Cosmic WeaponRandom SSR Cosmic Weapon.s.
Specialty WPN 2 DMG Bonus	-	1%	3%	5%	★★	All Specialty WPN DMG Bonuses can be extremely powerful or borderline useless, depending on the grid used. Very powerful when used with Cosmic WeaponRandom SSR Cosmic Weapon.s.
Double Attack Bonus	-	1%	3%	5%	★★★★	Multiattack boosts on the MC are valuable to keep their charge bar ahead of the party or to keep up with characters who have boosts to their own multiattack rate, enabling chain bursts sooner. Especially useful for classes that use some of their charge bar for some of their abilities.
Energy Bonus	-	1	2	3	★★	Sword Master / Glorybringer only. Usefulness is based on energy cost of mainhand used. Generally considered poor.
Bullet Casting Bonus	-	Lvl 2	Lvl 3	Lvl 4	★★★★	Gunslinger only. Gains access to superior Bullet Casting, allowing forging of superior bullets. Can be removed after desired bullets are casted.Verification needed.
Bullet Casting Bonus	-	Lvl 2	Lvl 3	Lvl 4	★★★★	Soldier only. Gains access to superior Bullet Casting, allowing forging of superior bullets. Can be removed after desired bullets are casted.Verification needed.
Critical Hit Bonus	151	1%	3%	5%	★	Unlike the character perk version which is very powerful, this only adds 5% damage bonus with a 5% chance to occur which is terrible.
Total Party HP Bonus	155	300	600	1000	★★★★	A direct upgrade to the HP Perk. Always useful.
DEF Bonus II	155	1%	3%	5%	★★	Extra DEF. Always a safe choice for HL.
Specialty WPN 1 DMG Bonus II	160	1%	3%	5%	★★	All Specialty WPN DMG Bonuses can be extremely powerful or borderline useless, depending on the grid used. Very powerful when used with Cosmic WeaponRandom SSR Cosmic Weapon.s.
Specialty WPN 2 DMG Bonus II	160	1%	3%	5%	★★	All Specialty WPN DMG Bonuses can be extremely powerful or borderline useless, depending on the grid used. Very powerful when used with Cosmic WeaponRandom SSR Cosmic Weapon.s.
Skill DMG Bonus II	160	1%	3%	5%	★	By the time users have access to this, they will already be hitting skill damage cap with prior EMP bonuses.
Double Attack Bonus II	165	1%	3%	5%	★★★★	Increased charge bar gain is always useful.
Triple Attack Bonus	165	1%	3%	5%	★★★★	Increased charge bar gain is always useful.
C.A. DMG Bonus II	170	1%	3%	5%	★★★	Due to new CA damage cap which is harder to hit, not as bad as before. Recommended when you want to hit cap CA on HL bosses' DEF. Especially useful in fights without debuffs like Ultimate Bahamut (Raid).
DMG Cap Bonus	170	3%	6%	10%	★★★★	Increases the maximum amount of damage that the MC can do by 10%. Extremely powerful.
Chain Burst DMG Bonus	175	1%	3%	5%	★	Chain Bursts often hit damage cap with finished grids.
Dodge	176	1%	2%	3%	★	3% Dodge rate can be powerful, but it's too inconsistent to be recommended.
Critical Hit Bonus II	180	1%	3%	5%	★	Extra crit. It stacks directly with Critical Hit Bonus I, bringing total bonus to 10% chance to deal 10% additional damage.
Total Party HP Bonus II	185	300	600	1000	★★★★	Even more HP.
C.A. DMG Bonus III	190	1%	3%	5%	★★★	Due to new CA damage cap which is harder to hit, not as bad as before. Recommended when you want to hit cap CA on HL bosses' DEF. Especially useful in fights without debuffs like Ultimate Bahamut (Raid).
DMG Cap Bonus II	195	1%	3%	5%	★★★★	Not as useful as DMG Cap Bonus, it's still a solid pick as it's 5% increased damage cap.
Specialty WPN 1 DMG Bonus III	200	1%	3%	5%	★★	All Specialty WPN DMG Bonuses can be extremely powerful or borderline useless, depending on the grid used. Very powerful when used with Cosmic WeaponRandom SSR Cosmic Weapon.s.
Specialty WPN 2 DMG Bonus III	200	1%	3%	5%	★★	All Specialty WPN DMG Bonuses can be extremely powerful or borderline useless, depending on the grid used. Very powerful when used with Cosmic WeaponRandom SSR Cosmic Weapon.s.
Elemental ATK Bonus II	205	?	?	?	★★	See Elemental ATK Bonus.
Total Party HP Bonus III	210	300	600	1000	★★★★	Even more HP.
Chain Burst DMG Bonus II	215	1%	3%	5%	★	Chain Bursts often hit damage cap with finished grids.
Elemental Resistance Bonus II	220	?	?	?	★	See Elemental Resistance Bonus.
DEF Bonus III	225	?	?	?	★★	Extra DEF. Always a safe choice for HL.
Skill DMG Cap Bonus	230	3%	5%	10%	?
Chain Burst DMG Cap Bonus	240	1%	3%	5%	?
Specialty WPN (1 and 2) DMG Bonus	250	1%	3%	5%	?
EXP and RP Bonus	255	1%	3%	5%	?
Triple Attack Bonus II	265	1%	3%	5%	?
Skill DMG Cap Bonus II	275	1%	3%	5%	?

Star Cap

The total number of stars that can be added to each class at a time is determined by Extended Mastery Level, which is a function of your Rank.

EM Lvl	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20
Rank	-	20	30	40	50	60	70	80	90	100	105	110	115	120	125	130	135	140	145	150
Star cap	1	2	3	4	6	8	10	12	14	20	21	22	23	24	25	26	27	28	29	30

EM Lvl	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35	36	37	38	39	40
Rank	155	160	165	170	175	180	185	190	195	200	205	210	215	220	225	230	235	240	245	250
Star cap	31	32	33	34	36	37	38	39	40	42	43	44	45	46	48	49	50	51	52	54

EM Lvl	41			44
Rank	255			270
Star cap	55			58

Star Cost

Each star added to a perk increases the cost of additional stars, eg.

The first star you add costs 1 EMP; the second and third each cost 2 EMP; 26 through 30 each cost 11 EMP
Removing stars will similarly reduce the cost, making it more efficient to remove multiple stars at a time before replacing them
Check the table below for the cost of a given star

Star	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
EMP cost	1	2	2	3	3	4	4	5	5	5	6	6	6	7	7
Gem cost	20	40	40	60	60	80	80	100	100	100	120	120	120	140	140
EMP total	1	3	5	8	11	15	19	24	29	34	40	46	52	59	66
Gem total	20	60	100	160	220	300	380	480	580	680	800	920	1040	1180	1320

Star	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
EMP cost	7	8	8	8	9	9	9	10	10	10	11	11	11	11	11
Gem cost	140	160	160	160	180	180	180	200	200	200	220	220	220	220	220
EMP total	73	81	89	97	106	115	124	134	144	154	165	176	187	198	209
Gem total	1460	1620	1780	1940	2120	2300	2480	2680	2880	3080	3300	3520	3740	3960	4180

Star	31	32	33	34	35	36	37	38	39	40	41	42	43	44	45
EMP cost	12	12	12	12	13	13	13	13	14	14	14	14	15	15	15
Gem cost	240	240	240	240	260	260	260	260	280	280	280	280	300	300	300
EMP total	221	233	245	257	270	283	296	309	323	337	351	365	380	395	410
Gem total	4420	4660	4900	5140	5400	5660	5920	6180	6460	6740	7020	7300	7600	7900	8200

Star	46	47	48	49	50	51	52	54	54	55	56	57	58
EMP cost	15	16	16	16	16	17	17	17	17	18	18	18	18
Gem cost	300	320	320	320	320	340	340	340	340	360	360	360	360
EMP total	425	441	457	473	489	506	523	540	557	575	593	611	629
Gem total	8500	8820	9140	9460	9780	10120	10460	10800	11140	11500	11860	12220	12580

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