Willbreaker 
Creature — Human Wizard
$1.78 #6322 0.92 11.1 years
Whenever a creature an opponent controls becomes the target of a spell or ability you control, gain control of that creature for as long as you control this creature.
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Cards similar to Willbreaker expected a card that isn't here?
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Fractured Loyalty94%
$0.20↓#22842↓0.13↓22.9 years↑
"Whenever enchanted creature becomes the target of a spell or ability, that spell or ability's controller gains control of that creature."
Sower of Temptation80%
$2.59↑#4030↑0.52↓18.9 years↑
"When this creature enters, gain control of target creature for as long as this creature remains on the battlefield."
Horobi, Death's Wail77%
$0.39↓#10338↓0.8621.9 years↑
"Whenever a creature becomes the target of a spell or ability, destroy that creature."
Cowardice76%
$0.49↓#19318↓0.67↓26.9 years↑
"Whenever a creature becomes the target of a spell or ability, return that creature to its owner's hand."
Rubinia Soulsinger75%
$0.38↓#19060↓0.48↓32.3 years↑
"
: Gain control of target creature for as long as you control this card and this card remains tapped."
: Gain control of target creature for as long as you control this card and this card remains tapped."
Loki, God of Mischief72%
$2.05↑#9404↓0.00↓0.2 years↓
"Whenever a player or permanent becomes the target of an ability you control, draw a card. This ability triggers only once each turn."
Mind Flayer72%
$0.35↓#4550↑0.65↓5.1 years↓
"When this creature enters, gain control of target creature for as long as you control this creature."
Roil Elemental72%
$13.26↑#3939↑1.06↑16.9 years↑
"Whenever a land you control enters, you may gain control of target creature for as long as you control this creature."
Soul Seizer // Ghastly Haunting70%
$0.12↓#24083↓0.00↓14.6 years↑
"When this creature deals combat damage to a player, you may transform it. If you do, attach it to target creature that player controls."
Kitsune, Dragon's Daughter70%
$0.29↓#17332↓0.00↓0.5 years↓
"Whenever this card enters or deals combat damage to a player, you may exchange control of two other target creatures controlled by different players."