Fires of War

This spell costs {8} less to cast if the target
opponent has dealt attacked you with at least
8 creatures or dealt at least 8 damage to you.
Destroy all creatures target opponent controls.
Then each creature you control deals damage
equal to its power to the same target opponent.
In the year 208, the combined forces of Shu
and Wu engulfed Wei's massive fleet, halting
Cao Cao's conquest.