Boneyard Wurm [Wizards Play Network 2011] HER052 put a +1/+1 counter on

put a +1/+1 counter on each creature target player controls

then you may cast a spell from each opponent's graveyard without paying its mana cost

• A — Gain control of target creature you don't control

Set: Eldritch Moon Type: Enchantment Rarity: Uncommon Cost: {3}{W}{B} Whenever a creature you control attacks

Set: Kaladesh Type: Creature — Vedalken Artificer Rarity: Uncommon Cost: {1}{U}{R} When Whirler Virtuoso enters the battlefield

Boneyard Wurm [Wizards Play Network 2011] HER052 put a +1/+1 counter onSet: Wizards Play Network 2011 Type: Creature Wurm Rarity: Rare Cost: {1}{G} Boneyard Wurm's power and toughness are each equal to the number of creature cards in your graveyard. The only thing it likes more than discovering a pit of bones is adding to it.