The Undead Legion

Create X 3/3 Abyss Watcher creature tokens
with: At the end of your turn, each Abyss
Watcher you own fights another Abyss Watcher.
Before fighting, each Abyss Watcher gets +0/+1.
When there are no more Abyss Watchers on
the field, take this card from your graveyard and
shuffle it into your deck.