Chalice of the Void [Mirrodin] Oversize Cards Set: Revised Edition Type: Instant

Set: Revised Edition Type: Instant Rarity: Rare Cost: {R}{R} Copy target instant or sorcery spell

Set: Zendikar Rising Expeditions Type: Land Rarity: Mythic Morphic Pool enters the battlefield tapped unless you have two or more opponents

A deck can have any number of cards named Relentless Rats

you may cast that card face down as a 2/2 creature spell without paying its mana cost

Chalice of the Void [Mirrodin] Oversize Cards Set: Revised Edition Type: InstantSet: Mirrodin Type: Artifact Rarity: Rare Cost: {X}{X} Chalice of the Void enters the battlefield with X charge counters on it. Whenever a player casts a spell with mana value equal to the number of charge counters on Chalice of the Void, counter that spell.