Cloak of Confusion {1}{B}
Enchantment — Aura
Enchant creature you control
Whenever enchanted creature attacks and isn't blocked, you may have it assign no combat damage this turn. If you do, defending player discards a card at random.
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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.
Curse of Chaos 86%
$0.36#14124
"Whenever a player attacks enchanted player with one or more creatures, that attacking player may discard a card. If the player does, they draw a card."
Ophidian 84%
$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."
Security Bypass 83%
$0.24#6158
"As long as enchanted creature is attacking alone, it can't be blocked."
Ma Chao, Western Warrior 82%
$80.20#26861
"Whenever this card attacks alone, it can't be blocked this combat."
Gutter Skulker // Gutter Shortcut 81%
$0.08#21571
"Enchanted creature can't be blocked as long as it's attacking alone."
Stromgald Spy 81%
$0.15#29721
"Whenever this creature attacks and isn't blocked, you may have defending player play with their hand revealed for as long as this creature remains on the battlefield. If you do, this creature assigns no combat damage this turn."