Hour of Reckoning - Warhammer 40,000 Commander

Hour of Reckoning
Sorcery

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

Destroy all nontoken creatures.

The Battle of Baal was the bloodiest and most costly in the entire noble history of the Sons of Sanguinius.