I have yet to play the game. However my avid watching of the wizard forums have shown a rather… irritating thing.
Spr is supposed to be important, UNLESS, you summon. To be viable you have to completely ignore it because the summons drain is % based.
My suggestion: Make the summons a # based on the level of the summon skill x card quality + Card utility
I don’t know the exact numbers now so I will make an example.
Using a quest card, low, vs a boss drop, high.
Level 5 Devil, Card Quest 2 quality, 3 Utility
50 20 30 = 100 mp drain
Level 2 Devil, Card Boss 5 Quality, 4 Utility
20 50 40 = 110 mp drain
Makes how much energy you want drained dependent entirely on you. having a low or mid class card but high skill to offset it thanks to the passives to Int + Spr which would be viable so you can actually put points into it. Also a temp fix until they get around to torqueing up the AI to be… useful.