Amonkhet Remastered

Imminent Doom

Imminent Doom enters the battlefield with a doom counter on it.
Whenever you cast a spell with converted mana cost equal to the number of doom counters on Imminent Doom, Imminent Doom deals that much damage to any target. Then put a doom counter on Imminent Doom.

Imminent Doom enters with a doom counter on it.
Whenever you cast a spell with mana value equal to the number of doom counters on Imminent Doom, Imminent Doom deals that much damage to any target. Then put a doom counter on Imminent Doom.

Hour of Devastation

Imminent Doom enters the battlefield with a doom counter on it.
Whenever you cast a spell with converted mana cost equal to the number of doom counters on Imminent Doom, Imminent Doom deals that much damage to target creature or player. Then put a doom counter on Imminent Doom.