Armored Armadillo {W}
Creature — Armadillo
Ward {1} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {1}.)
{3}{W}: This creature gets +X/+0 until end of turn, where X is its toughness.
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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.
Loxodon Lifechanter 94%
$0.24#18230
"{5}{W}: This creature gets +X/+X until end of turn, where X is your life total."
Kitsune Loreweaver 91%
$0.20#25798
"{1}{W}: This creature gets +0/+X until end of turn, where X is the number of cards in your hand."