Crackling Doom [Commander 2016] Demon The imps' warbling cries echo

The imps' warbling cries echo through Phyrexia's towers like those of mourning doves in a cathedral

Set: Journey into Nyx Type: Creature — Human Shaman Rarity: Mythic Cost: {1}{R}{R} Double strike

Then you hear the growls

Set: Eventide Type: Instant Rarity: Uncommon Cost: {1}{W/B} Choose any number of target creatures

Set: Commander Anthology Type: Creature — Elemental Beast Rarity: Rare Cost: {5}{G} When Grave Sifter enters the battlefield

Crackling Doom [Commander 2016] Demon The imps' warbling cries echoSet: Commander 2016 Type: Instant Rarity: Rare Cost: {R}{W}{B} Crackling Doom deals 2 damage to each opponent. Each opponent sacrifices a creature with the greatest power among creatures that player controls. Do not fear the lightning. Fear the one it obeys.