Invasion of Tarkir [March of the Machine]

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it’s defeated, exile it, then cast it transformed.)

When Invasion of Tarkir enters the battlefield, reveal any number of Dragon cards from your hand. When you do, Invasion of Tarkir deals X plus 2 damage to any other target, where X is the number of cards revealed this way. (X can be 0.)

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Defiant Thundermaw

Flying, trample

Whenever a Dragon you control attacks, it deals 2 damage to any target.
Rarity: M
Card Number: #149
Type: Battle — Siege // Creature — Dragon
Flavor: “The Phyrexians are fools if they believe they can weather such a storm.”
—Sarkhan Vol