Scriptname SampleScript Extends ActiveMagicEffect

Spell Property aaaSpellPowerAttackFX Auto

Actor MySelf
Bool PlayedPowerAttackFX

Event OnEffectStart(Actor akTarget, Actor akCaster)
    MySelf = akTarget
    RegisterForAnimationEvent(MySelf, "preHitFrame")
    RegisterForAnimationEvent(MySelf, "HitFrame")
EndEvent

Event OnAnimationEvent(ObjectReference akSource, string asEventName)
    if asEventName == "HitFrame"
        PlayedPowerAttackFX = false
    else
        if !PlayedPowerAttackFX
            aaaSpellPowerAttackFX.Cast(MySelf)
            PlayedPowerAttackFX = true
        endif
    endif
EndEvent