I was hoping yall could answer a specific question related to my character. Unfortunately, I don't have the reputation points to link more than 2 of my abilities. Apologies!
I play a level 9 Magus with a single Mythic Tier and as I gain more attacks through my BAB progression and with abilities like Speed for my weapon and the Sudden Attack Mythic ability - I start to lose focus with how the Spell Combat and Spellstrike work together in concert during a full attack round and it's creating friction between myself and the GM.
To make things simple, the following scenario (and I'll repeat it a couple times) involves my magus being directly adjacent to a foe.
Currently my BAB is +6/1, so each round I get two melee attacks with my scimitar. If I enhance my scimitar with Speed (via Arcane Pool with the Speed enhancement) , it breaks down to +6/1/6 as I get the additional attack at my highest attack bonus. If I use a Mythic pool point (using Sudden Attack), I can then perform an additional attack, suddenly using a swift action, at my highest BAB. Giving me a total of 4 standard attacks of +6/1/6/6 (if I've read things correctly.)
Now using Spell Combat I must apply a -2 to all my melee attacks (including my Spellstrike) if I'm casting a spell in my off hand (Vampiric Touch) and attacking with my scimitar.
So let's say I'm directly adjacent to my foe; can I (using Spell Combat) attack first w/ Vampiric Touch in my OFF-hand, then attack using Spellstrike with my MAIN hand cast Shocking Grasp through the scimitar at +6 (-2) (plus mods, etc) and then the rest of my melee attacks at +1 (-2), then +6 (-2) (hasted), then as a swift action activating my Mythic pool Sudden Attack +6 (-2)? This would be a total of 2 touch spells and 4 melee attacks in a Full-Round Action.
My GM seems to think I'm limited to a single spell per round. What do you think? I really appreciate your consideration and help with this complicated class question!