Imperious Mindbreaker {1}{U}{U}
Creature — Human Wizard
Soulbond (You may pair this creature with another unpaired creature when either enters. They remain paired for as long as you control both of them.)
As long as Imperious Mindbreaker is paired with another creature, each of those creatures has "Whenever this creature attacks, each opponent mills cards equal to its toughness."
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Cyclops Gladiator 86%
$0.17#23913
"Whenever this creature attacks, you may have it deal damage equal to its power to target creature defending player controls. If you do, that creature deals damage equal to its power to this creature."
Dwarven Vigilantes 85%
$0.14#26636
"Whenever this creature attacks and isn't blocked, you may have it deal damage equal to its power to target creature. If you do, this creature assigns no combat damage this turn."
Ekundu Cyclops 84%
$0.11#30718
"If a creature you control attacks, this creature also attacks if able."
Redoubled Stormsinger 84%
$0.25#3402
"Whenever this creature attacks, for each creature token you control that entered this turn, create a tapped and attacking token that's a copy of that token. At the beginning of the next end step, sacrifice those tokens."
Mirror-Style Master 84%
$0.27#12093
"Whenever this creature attacks, for each attacking modified creature you control, create a tapped and attacking token that's a copy of that creature. Exile those tokens at end of combat."
Sunfrill Imitator 83%
$0.80#3713
"Whenever this creature attacks, you may have it become a copy of another target Dinosaur you control, except its name is this card and it has this ability."
Momentum Rumbler 83%
$0.26#21905
"Whenever this creature attacks, if it has first strike, it gains double strike until end of turn."
Grothama, All-Devouring 83%
$0.64#6698
"Other creatures have "Whenever this creature attacks, you may have it fight this card.""
Ondu Rising 83%
$0.05#23891
"Whenever a creature attacks this turn, it gains lifelink until end of turn."
Mardu Siegebreaker 83%
$0.46#3889
"Whenever this creature attacks, for each opponent, create a tapped token that's a copy of the exiled card attacking that opponent. At the beginning of your next end step, sacrifice those tokens."
Copycrook 83%
$0.23#6275
"You may have this creature enter as a copy of any creature on the battlefield, except it has "Whenever this creature attacks, it connives.""
Picnic Ruiner // Stolen Goodies 83%
$0.15#14988
"Whenever this creature attacks while you control a creature with power 4 or greater, this creature gains double strike until end of turn."
Ballroom Brawlers 83%
$0.16#24133
"Whenever this creature attacks, this creature and up to one other target creature you control both gain your choice of first strike or lifelink until end of turn."
Horrid Shadowspinner 82%
$0.20#11603
"Whenever this creature attacks, you may draw cards equal to its power. If you do, discard that many cards."
+1 more matching line
Siege Behemoth 82%
$7.67#8600
"As long as this creature is attacking, for each creature you control, you may have that creature assign its combat damage as though it weren't blocked."
Yuan Shao's Infantry 82%
$5.31#31156
"Whenever this creature attacks alone, this creature can't be blocked this combat."
Silverblade Paladin 82%
$0.77#9674
"As long as this creature is paired with another creature, both creatures have double strike."
+1 more matching line