Grave Pact [Commander 2011]Set: Commander 2011 Type: Enchantment Rarity: Rare Cost: {1}{B}{B}{B} Whenever a creature you control dies, each other player sacrifices a creature. "The bonds of loyalty can tie one to the grave." Crovax, ascendant evincar

and that player can't activate abilities that aren't mana abilities

{T}: Put a mire counter on target non-Swamp land

Set: Seventh Edition Type: Sorcery Rarity: Rare Cost: {2}{W}{W} Destroy all creatures

incredible

Set: Modern Masters 2017 Type: Land Rarity: Mythic As Cavern of Souls enters the battlefield

" —*Scroll of Beginnings*

Set: Ixalan Prerelease Promos Type: Creature — Dinosaur Rarity: Rare Cost: {5}{W}{W} Double strike

Set: Duel Decks: Venser vs

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

They can't be regenerated

If that mana is spent on an instant or sorcery spell

if Mana Vault is tapped