Timeless Dragon

Flying
Plainscycling {2} ({2}, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.)
Eternalize {2}{W}{W} ({2}{W}{W}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Dragon with no mana cost. Eternalize only as a sorcery.)

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Aetherdrift Commander

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Modern Horizons 2

It has flown the sky for eons without ever touching ground.

Flying
Plainscycling {2}
Eternalize {2}{W}{W}