ExtortExtort is a triggered ability. “Extort” means “Whenever you cast a spell, you may pay . If you do, each opponent loses 1 life and you gain life equal to the total life lost this way.”
If a permanent has multiple instances of extort, each triggers separately. (CR 702.101)
,
SacrificeTo sacrifice a permanent, its controller moves it from the battlefield directly to its owner’s graveyard. A player can’t sacrifice something that isn’t a permanent, or something that’s a permanent they don’t control. Sacrificing a permanent doesn’t destroy it, so regeneration or other effects that replace destruction can’t affect this action. (CR 701.21) a non-Spirit creature: Return target creature card from your graveyard to your hand. It perpetually becomes a Spirit, has base power and toughness 1/1, and gains "You may pay
rather than pay this spell's mana cost."
ActivateTo activate an activated ability is to put it onto the stack and pay its costs, so that it will eventually resolve and have its effect. Only an object’s controller (or its owner, if it doesn’t have a controller) can activate its activated ability unless the object specifically says otherwise. A player may activate an ability if they have priority. See rule 602, “Activating Activated Abilities.” (CR 701.2) only as a sorcery.