As an additional cost to cast this spell, reveal a colorless creature card from your hand.
Exile each creature and planeswalker with mana value less than the revealed card’s mana value.
To the Zendikari, an apocalypse. To the Eldrazi, a day like any other.
The colorless creature card you reveal doesn't have to still be in your hand as Calamity of the Titans resolves. If it's not, use its mana value as it last existed in your hand.
28-07-2023
wotc
The colorless creature card stays revealed until Calamity of the Titans leaves the stack.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.