Historian of Zhalfir 


Creature — Human Wizard
Whenever this creature attacks, if you control a Teferi planeswalker, draw a card.
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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.
Isperia, Supreme Judge 90%
$0.31#9985
"Whenever a creature attacks you or a planeswalker you control, you may draw a card."
Eternal of Harsh Truths 85%
$0.22#17420
"Whenever this creature attacks and isn't blocked, draw a card."
Werewolf Pack Leader 84%
$0.39#8342
"Whenever this creature attacks, if you attacked with creatures with total power 6 or greater this combat, draw a card."
Ophidian 83%
$0.43#26493
"Whenever this creature attacks and isn't blocked, you may draw a card. If you do, this creature assigns no combat damage this turn."
Jon Irenicus, Shattered One 81%
$0.33#7523
"Whenever a creature you own but don't control attacks, you draw a card."