Overencumbered {1}{W}
Enchantment — Aura
Enchant opponent
When this Aura enters, enchanted opponent creates a Clue token, a Food token, and a Junk token.
At the beginning of combat on enchanted opponent's turn, that player may pay {1} for each artifact they control. If they don't, creatures can't attack this combat.
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Cards that do something similar expected a card that isn't here?
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Champions of Minas Tirith 89%
$0.32#5273
"At the beginning of combat on each opponent's turn, if you're the monarch, that opponent may pay {X}, where X is the number of cards in their hand. If they don't, they can't attack you this combat."
Web of Inertia 85%
$0.75#11836
"At the beginning of combat on each opponent's turn, that player may exile a card from their graveyard. If the player doesn't, creatures they control can't attack you this turn."
Summon: Yojimbo 83%
$1.48#2528
"Until your next turn, creatures can't attack you unless their controller pays {2} for each of those creatures."
Kratos, God of War 83%
$53.91#6533
"At the beginning of each player's end step, this card deals damage to that player equal to the number of creatures that player controls that didn't attack this turn."
Gadrak, the Crown-Scourge 82%
$0.33#3944
"this card can't attack unless you control four or more artifacts."
Alexios, Deimos of Kosmos 82%
$0.54#1245
"this card attacks each combat if able, can't be sacrificed, and can't attack its owner."
Shauku, Endbringer 82%
$2.34#20586
"this card can't attack if there's another creature on the battlefield."
Angelic Arbiter 81%
$4.93#5000
"Each opponent who cast a spell this turn can't attack with creatures."
+1 more matching line
Akron Legionnaire 81%
#28174
"Except for creatures named this card and artifact creatures, creatures you control can't attack."
Fealty to the Realm 81%
$0.24#10407
"Enchanted creature attacks each combat if able and can't attack you."
+1 more matching line
Halls of Mist 81%
$3.40#19884
"Creatures that attacked during their controller's last turn can't attack."
The Second Doctor 80%
$0.47#3825
"At the beginning of your end step, each player may draw a card. Each opponent who does can't attack you or permanents you control during their next turn."