Deathbringer Dragonlord -Spoiler Dragons of Tankir-

MTG GUARDIAN

Deathbringer Dragonlord

Color: Black
Type: Creature - Dragon
Rarity: Rare
Set: Dragons of Tarkir

Cost: 

Flying

When Deathbringer Dragonlord enters the battlefield, if you cast it from your hand, and there are five or more creatures on the battlefield, then destroy all other creatures.

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