Chalice of the Void [Modern Masters] Archenemy Schemes if Mana Vault is tapped

if Mana Vault is tapped

Set: Modern Masters 2015 Type: Creature — Elemental Rarity: Rare Cost: {1}{B}{B} Wither (This deals damage to creatures in the form of -1/-1 counters

An old and powerful wizard living on the mysterious isle of Tolaria

you may pay {1} any time you could cast an instant

where X is that spell's mana value

Chalice of the Void [Modern Masters] Archenemy Schemes if Mana Vault is tappedSet: Modern Masters 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.