Elemental strike

Ⓒ Elemental Strike (per-encounter free interrupt ✦ elemental metamagic)
Prerequisites:	Elementalism
Trigger:	You would damage an enemy with a melee or ranged weapon attack, or an attack that deals an elemental damage type.
|-		Effect:	The attack deals an additional +1d6 elemental damage and automatically causes one elemental arcane affliction, in addition to any of its other effects.
Special	If the original attack dealt a type of elemental damage, this effect deals the same type of damage and affliction. Otherwise, you may choose the elemental damage and affliction type that this spell inflicts.