Cataclysm [From the Vault: Annihilation] Cartoons The threat of annihilation has

The threat of annihilation has become so dire that groups as disparate as the Harpers and Zhentarim are banding together to fight the cult

centaur druid

From the box (translated):

they tap all lands with mana abilities they control and lose all unspent mana

Cataclysm [From the Vault: Annihilation] Cartoons The threat of annihilation hasSet: From the Vault: Annihilation Type: Sorcery Rarity: Mythic Cost: {2}{W}{W} Each player chooses from among the permanents they control an artifact, a creature, an enchantment, and a land, then sacrifices the rest. "Keep with you only this much: your mount, your blade, and your wits. The rest you can find, build, or take." Horse clans' wisdom