Relentless Dead [Shadows over Innistrad]

Description

Set:	Shadows over Innistrad
Type:	Creature — Zombie
Rarity:	Mythic
Cost:	{B}{B}

Menace (This creature can't be blocked except by two or more creatures.)
When Relentless Dead dies, you may pay {B}. If you do, return it to its owner's hand.
When Relentless Dead dies, you may pay {X}. If you do, return another target Zombie creature card with converted mana cost X from your graveyard to the battlefield.