Intervene

Divine Spell, Warding

APC: 1, which you may spend reactively when an enemy within range casts a spell

SPC: Special

Range: 60 ft

Requirements: Verbal, Visual, Gesture

Duration: Instantaneous

Spend an amount of SP equal to the SP of the spell you are intervening against.

Make a magic attack against the target creature’s WILL. If the target creature uses the Primal or Psionic source, roll 2d20 and use the higher of the two. If the target uses the Arcane or Occult source, roll 2d20 and use the lower of the two. If the target uses the Divine source, roll 1d20.

If you hit, the target creature fails to cast the spell, but still loses its AP and SP. If you miss, then you lose your AP and you expend half the SP you otherwise would.