Deadpool, Merc with the Mouth

Haste, Vigilance
At the beginning of your upkeep, return Deadpool, Merc with the Mouth from your graveyard to the battlefield.
Whenever Deadpool, Merc with the Mouth exits the graveyard, take one damage.
Deadpool, Merc with the Mouth attacks each turn if able.
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"Look Ma, I'm a Magic the Gathering card!"