Tenured Oilcaster 

Creature — Phyrexian Wizard
Menace (This creature can't be blocked except by two or more creatures.)
This creature gets +3/+0 as long as an opponent has eight or more cards in their graveyard.
Whenever this creature attacks or blocks, each player mills 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.
Blackbloom Rogue // Blackbloom Bog 100%
$0.13#8624
"This creature gets +3/+0 as long as an opponent has eight or more cards in their graveyard."
+1 more matching line
Jace's Phantasm 87%
$0.34#7709
"This creature gets +4/+4 as long as an opponent has ten or more cards in their graveyard."
Saprazzan Outrigger 84%
$0.18#31102
"When this creature attacks or blocks, put it on top of its owner's library at end of combat."
Carrion Rats 83%
$0.15#21138
"Whenever this creature attacks or blocks, any player may exile a card from their graveyard. If a player does, this creature assigns no combat damage this turn."
The Restoration of Eiganjo // Architect of Restoration 82%
$0.90#4246
"Whenever this creature attacks or blocks, create a 1/1 colorless Spirit creature token."
Giggling Skitterspike 81%
$13.00#2230
"Whenever this creature attacks, blocks, or becomes the target of a spell, it deals damage equal to its power to each opponent."
Mana-Charged Dragon 81%
$1.33#18393
"Whenever this creature attacks or blocks, each player starting with you may pay any amount of mana. This creature gets +X/+0 until end of turn, where X is the total amount of mana paid this way."
Balor 81%
$4.59#4229
"Whenever this creature attacks or dies, choose one or more. Each mode must target a different player."
Fickle Efreet 81%
$0.46#21364
"Whenever this creature attacks or blocks, flip a coin at end of combat. If you lose the flip, an opponent gains control of this creature."