Kang the Conqueror 


Legendary Creature — Human Villain
Flying
Power-up — {5}{U}{U}{U}: Put a +1/+1 counter on Kang. Take an extra turn after this one. During that turn, power-up abilities can't be activated. (Activate each power-up ability only once. Reduce the cost by his mana cost if he entered this turn.)
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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.