Scourge of the Throne {4}{R}{R}
Creature — Dragon
Flying
Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)
Whenever this creature attacks for the first time each turn, if it's attacking the player with the most life or tied for most life, untap all attacking creatures. After this phase, there is an additional combat phase.
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Cards that do something similar expected a card that isn't here?
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Jangling Automaton 96%
$0.11#21680
"Whenever this creature attacks, untap all creatures defending player controls."
Copperhorn Scout 96%
$0.27#5520
"Whenever this creature attacks, untap each other creature you control."
Shakedown Heavy 95%
$0.35#6566
"Whenever this creature attacks, defending player may have you draw a card. If they do, untap this creature and remove it from combat."
Apes of Rath 94%
$0.28#25240
"Whenever this creature attacks, it doesn't untap during its controller's next untap step."
Lead Golem 94%
$0.13#31565
"Whenever this creature attacks, it doesn't untap during its controller's next untap step."
Melee 93%
$0.33#28941
"Whenever a creature attacks and isn't blocked this combat, untap it and remove it from combat."
Spectral Bears 92%
#19485
"Whenever this creature attacks, if defending player controls no black nontoken permanents, it doesn't untap during your next untap step."
Spectral Force 92%
$0.25#27516
"Whenever this creature attacks, if defending player controls no black permanents, it doesn't untap during your next untap step."
Finest Hour 91%
$1.17#8384
"Whenever a creature you control attacks alone, if it's the first combat phase of the turn, untap that creature. After this phase, there is an additional combat phase."
Port Razer 89%
$0.98#1897
"Whenever this creature deals combat damage to a player, untap each creature you control. After this phase, there is an additional combat phase."
Raggadragga, Goreguts Boss 89%
$0.22#7103
"Whenever a creature you control with a mana ability attacks, untap it."
Fear of Missing Out 88%
$2.37#2544
"Whenever this creature attacks for the first time each turn, if there are four or more card types among cards in your graveyard, untap target creature. After this phase, there is an additional combat phase."
Karlach, Fury of Avernus 88%
$25.13#1039
"Whenever you attack, if it's the first combat phase of the turn, untap all attacking creatures. They gain first strike until end of turn. After this phase, there is an additional combat phase."
Reveille Squad 87%
$0.28#17354
"Whenever one or more creatures attack you, if this creature is untapped, you may untap all creatures you control."
Bloodthirster 87%
$32.32#2531
"Whenever this creature deals combat damage to a player, untap it. After this phase, there is an additional combat phase."
Triceraton Regenta 87%
$0.23#30604
"Whenever this creature attacks, untap up to one other target creature."
Hellkite Charger 87%
$4.10#2125
"Whenever this creature attacks, you may pay {5}{R}{R}. If you do, untap all attacking creatures and after this phase, there is an additional combat phase."