Havoc Jester
Creature — Devil
Whenever you sacrifice a permanent, Havoc Jester deals 1 damage to any target.
To the Rakdos, screams of delight and screams of terror are one and the same.
Illustrated by
Ravnica: Clue Edition#138UncommonEnglishLegality
Rulings
Havoc Jester’s ability is a triggered ability, not an activated ability. It doesn’t allow you to sacrifice a permanent whenever you want; rather, you need some other way of sacrificing permanents.
If you sacrifice a permanent as part of casting a spell or activating an ability, Havoc Jester’s ability will resolve before that spell or ability.
Havoc Jester’s ability triggers when you sacrifice it. If you sacrifice other permanents at the same time, it triggers for them as well.
A legendary permanent that is put into a graveyard because of the “legend rule” isn’t sacrificed.