Kianne, Dean of Substance // Imbraham, Dean of Theory
Legendary Creature — Elf Druid // Legendary Creature — Bird Wizard
{T}: Exile the top card of your library. If it's a land card, put it into your hand. Otherwise, put a study counter on it.
{4}{G}: Create a 0/0 green and blue Fractal creature token. Put a +1/+1 counter on it for each different mana value among nonland cards you own in exile with study counters on them.
Flying
{X}{U}{U}, {T}: Exile the top X cards of your library and put a study counter on each of them. Then you may put a card you own in exile with a study counter on it into your hand.
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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.
Oracle's Vault 99%
$0.29#12686
"{T}: Exile the top card of your library. Until end of turn, you may play that card without paying its mana cost. Activate only if there are three or more brick counters on this artifact."
Yasmin Khan 99%
#15113
"{T}: Exile the top card of your library. Until your next end step, you may play it."
Emil, Vastlands Roamer 86%
$0.26#11162
"{4}{G}, {T}: Create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is the number of differently named lands you control."
Aerial Caravan 84%
$0.38#30426
"{1}{U}{U}: Exile the top card of your library. Until end of turn, you may play that card."