荒れ模様のストームドレイク/Volatile Stormdrake

Creature - Drake
Flying, hexproof from activated and triggered abilities <CR>
When Volatile Stormdrake enters the battlefield, exchange control of Volatile Stormdrake and target creature an opponent controls. If you do, you get {E}{E}{E}{E}, then sacrifice that creature unless you pay an amount of {E} equal to its mana value.

Creature - Drake
Flying, hexproof from activated and triggered abilities <CR>
When Volatile Stormdrake enters, exchange control of Volatile Stormdrake and target creature an opponent controls. If you do, you get {E}{E}{E}{E}, then sacrifice that creature unless you pay an amount of {E} equal to its mana value.