As you can see, you can +1 her to tap an opposing dork or artifact and it skips an untap step, which is nice and will let you force a foe to cast another dork to get past it
However, not being purely Innistrad, this is a set that many will prefer for its singles than its boosters, and there are a few cards you'll really want to keep an eye on to get the highest value
If you don't, create a Treasure token.Whenever you cast a spell you don't own, put a +1/+1 counter on each Scout, Pirate, and Rogue you control
The simple ability to cast a bunch of free spells is something thats worth building around, and its worth putting Abaddon into other decks too
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Once the ability is activated and the cost is paid, it's too late to stop the ability from being activated by trying to remove the creature card from the graveyard