What Magic system for an action oriented monster hunt

[Kesendeja]

My game is heavily inspired by certain video games, Resident Evil and Devil May Cry being the two foundational. Bioweapons happen first and disguise the first wave of demon attacks. There are also going to be other supernatural creatures as well. So far I'm definitely going for inspiration from Castlevania, though the possession route of Buffy has its appeal.

No one in my group really likes the standard magic system.
So here is what I need:

• It needs to be fast enough for combat, but also need cabals and rituals for really large effects.
• Can handle different styles (I need to differentiate the various traditions somehow and this would be the best way)
• Has a downside, usually fatigue or quintessence cost (which is the main problem with Sorcery, everything is too cheap)

I'm more than willing to use houserules to modify whatever system has the best bones, but I need help.