Chalice of the Void [Kaladesh Inventions] SM143 you may reveal the top

you may reveal the top four cards of your library

Set: Black & White: Dark Explorers Type: Psychic Rarity: Rare Retreat cost: Colorless

Whenever a creature enters the battlefield under an opponent's control

put a -1/-1 counter on each creature your opponents control

Set: Vanguard Series Type: Vanguard Rarity: Rare Whenever a creature deals damage to you

Chalice of the Void [Kaladesh Inventions] SM143 you may reveal the topSet: Kaladesh Inventions Type: Artifact Rarity: Mythic 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.