Bonescythe Sliver (Duels of the Planeswalkers Promos) [Duels of the Planeswalkers Promos 2013] Zombie Set: League Tokens 2014 Type:

Set: League Tokens 2014 Type: Token Creature — Warrior Rarity: Common

Overload {6}{U} (You may cast this spell for its overload cost

More importantly

{1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn

If Cosmic Horror is destroyed this way

Bonescythe Sliver (Duels of the Planeswalkers Promos) [Duels of the Planeswalkers Promos 2013] Zombie Set: League Tokens 2014 Type:Set: Duels of the Planeswalkers Promos 2013 Type: Creature Sliver Rarity: Rare Cost: {3}{W} Sliver creatures you control have double strike. (They deal both first strike and regular combat damage.) "Their appendages are sharper than our swords and quicker than our bows." Hastric, Thunian scout