Aang, Swift Savior

Flash
Flying
When Aang enters, airbend up to one other target creature or spell. (Exile it. While it's exiled, its owner may cast it for rather than its mana cost.)
Waterbend : Transform Aang.
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Reach, trample
Whenever Aang and La attack, put a +1/+1 counter on each tapped creature you control.