Mask of the Schemer 
Artifact — Equipment
$1.48 #11411 0.32 4.4 years
Whenever equipped creature deals combat damage to a player, it connives X, where X is the amount of damage it dealt to that player. (Draw X cards, then discard X cards. Put a +1/+1 counter on that creature for each nonland card discarded this way.)
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Security Bypass86%
$0.29↓#6079↑0.50↑4.4 years
"Enchanted creature has "Whenever this creature deals combat damage to a player, it connives.""
Pip-Boy 300084%
$6.92↑#2671↑0.22↓2.5 years↓
"Equip "
"
Zephyr Boots82%
$0.40↓#4493↑0.20↓5.4 years↑
"Whenever equipped creature deals combat damage to a player, draw a card, then discard a card."
+1 more matching line
Swordsman, Sharp Scoundrel78%
$0.18↓#21010↓0.00↓0.2 years↓
"Whenever an equipped creature you control attacks, it connives."
Namor, Scourge of the Seas78%
$0.77↓#18854↓0.00↓0.2 years↓
"At the beginning of combat on your turn, target creature you control connives."
Atlantean Skirmisher78%
$0.28↓#24942↓0.00↓0.2 years↓
"Whenever this creature attacks, it connives."
Doc Ock's Henchmen78%
$0.17↓#135620.251.0 years↓
"Whenever this creature attacks, it connives."
Leader, Super-Genius76%
$0.39↓#93790.00↓0.2 years↓
"At the beginning of combat on your turn, target creature you control connives."
Skeleton Key76%
$0.26↓#8744↑0.3510.4 years↑
"Whenever equipped creature deals combat damage to a player, you may draw a card. If you do, discard a card."
+1 more matching line
Abomination of Gudul76%
$0.05↓#27440↓0.3811.9 years↑
"Whenever this creature deals combat damage to a player, you may draw a card. If you do, discard a card."
Locke Cole76%
$0.20↓#110540.291.2 years↓
"Whenever this card deals combat damage to a player, draw a card, then discard a card."
Baron Strucker, HYDRA Overlord76%
$0.19↓#8776↑0.00↓0.2 years↓
"Whenever another Villain you control enters, you may have it connive. Do this only once each turn."
Scurrilous Sentry76%
$0.13↓#16093↓0.00↓2.2 years↓
"Whenever this creature enters or attacks, it connives."
Prowler, Clawed Thief75%
$0.17↓#7971↑0.271.0 years↓
"Whenever another Villain you control enters, this card connives."
Raffine, Scheming Seer75%
$2.43↑#4888↑0.364.4 years
"Whenever you attack, target attacking creature connives X, where X is the number of attacking creatures."
Hypnotic Grifter75%
$0.18↓#22302↓0.00↓4.4 years
"
: This creature connives."
: This creature connives."
Illuminator Virtuoso74%
$0.23↓#16421↓0.274.4 years
"Whenever this creature becomes the target of a spell you control, it connives."
Scorpion, Seething Striker74%
$0.27↓#113360.14↓1.0 years↓
"At the beginning of your end step, if a creature died this turn, target creature you control connives."
Mask of Memory74%
$0.35↓#988↑0.13↓22.9 years↑
"Whenever equipped creature deals combat damage to a player, you may draw two cards. If you do, discard a card."
+1 more matching line
Assassin Gauntlet74%
$0.36↓#5449↑0.68↑2.2 years↓
"Equipped creature gets +1/+1 and has "Whenever this creature deals combat damage to a player, draw a card, then discard a card.""
+1 more matching line