At the beginning of your first main phase, you may pay G. If you do, transform Oko.
[+2]: Up to one target creature gains all creature types. (This effect doesn't end.)
[+1]: Target creature gets -2/-0 until your next turn.
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Oko, Shadowmoor Scion
At the beginning of your first main phase, you may pay U. If you do, transform Oko.
[-1]: Mill three cards. You may put a permanent card from among them into your hand.
[-3]: Create two 3/3 green Elk creature tokens.
[-6]: Choose a creature type. You get an emblem with "Creatures you control of the chosen type get +3/+3 and have vigilance and hexproof."
