Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - General Intelligence & Spell power?

Here are some numbers on Wildfire CD :
12 int : 5 turns
13 int : 5
14 int : 4
15 int : 4
16 int : 3

Would need some more testing, but it would seem that 2 int point reduce every spell CD by 1 turn.