How does Dispel work?

[thejeff]

No manual here, but I believe it uses the standard dominion open ended opposed die rolls.

Extra gems in global + caster level bonus + roll vs
Extra gems in dispel + caster level bonus + roll.

No idea which way ties go.

[ano]

Each magic level of the mage (both caster and dispeller) above required counts as 5 magic gems

[Xietor]

since you get a bonus for levels over the spell level, do you get a penalty for levels under it?

say you want to cast mother oak with a n3 caster, with 2 boosters. The caster is 2 levels short(in base magic). And there have been threads stating only base levels count for dispelling.

[ano]

I am not sure if base or current level is taken into account, but I believe there're no penalties. At least manual says nothing about this.