Chalice of the Void [Mirrodin] Oversize Cards If the player doesn't discard

If the player doesn't discard a card this way

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

At the beginning of the upkeep of enchanted artifact's controller

When Cavalier of Flame enters the battlefield

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 If the player doesn't discardSet: 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.