(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 Regatha enters the battlefield, it deals 4 damage to another target battle or opponent and 1 damage to up to one target creature.

Defense: 5

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Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

If a noncreature source you control would deal damage to a creature, battle, or opponent, it deals that much damage plus 2 instead.

4/4