888888Zombies

Whoops - figured it out myself. You just have to use OnEffectStart for projectiles, since that's when the target is struck by the effect!

I'm trying to make a simple fire-and-forget projectile spell in which the projectile's damage is increased by the spellcaster's actor values. Ideally, this means being able to have an event that triggers and knows who the caster, victim, and spell is. Where should the script be? ActiveMagicEffect doesn't seem to be able to trigger an event when a projectile hits the victim. I was told vaguely to use quest aliases - how would I go about doing that?