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'Flying
{T}: Add one mana of any color.
'{T}: Add {U}.
{U}, {T}: Untap target legendary permanent.
'As an additional cost to cast this spell, sacrifice a green creature.
Search your library for a green creature card, put it onto the battlefield, then shuffle.
'{U}, {T}, Discard a card: Return target creature to its owner's hand.
'{T}: Add {C}.
{T}, Sacrifice this land: Add {C}{C}.
'{T}, Pay 1 life, Sacrifice this land: Search your library for a Plains or Swamp card, put it onto the battlefield, then shuffle.
'{X}, {T}: The next time you would draw a card this turn, instead look at the top X cards of your library, put all but one of them on the...
'Haste
When this creature enters, creatures you control gain trample and get +X/+X until end of turn, where X is the number of creatures you control.
'Choose any number of creatures target player controls. Choose the same number of creatures another target player controls. Those players exchange control of those creatures. (This effect lasts indefinitely.)
'Untapped creatures you control get +0/+2.
'Haste
When this creature enters, creatures you control gain trample and get +X/+X until end of turn, where X is the number of creatures you control.
'Search your library for up to X basic land cards, where X is the greatest power among creatures you control. Put those cards onto the battlefield tapped, then shuffle.