Oko, Lorwyn Liege // Oko, Shadowmoor Scion
Legendary Planeswalker — Oko // Legendary Planeswalker — Oko
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.
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."
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Cards that do something similar expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Trystan, Callous Cultivator // Trystan, Penitent Culler 100%
$0.22#13995
"At the beginning of your first main phase, you may pay {G}. If you do, transform this card."
+1 more matching line
Brigid, Clachan's Heart // Brigid, Doun's Mind 100%
$0.49#6673
"At the beginning of your first main phase, you may pay {G}. If you do, transform this card."
+1 more matching line
Sygg, Wanderwine Wisdom // Sygg, Wanderbrine Shield 100%
$0.30#12552
"At the beginning of your first main phase, you may pay {U}. If you do, transform this card."
+1 more matching line
Ashling, Rekindled // Ashling, Rimebound 100%
$1.07#6195
"At the beginning of your first main phase, you may pay {U}. If you do, transform this card."
Wrenn and Realmbreaker 99%
$5.30#2706
"−2: Mill three cards. You may put a permanent card from among the milled cards into your hand."