Mesmeric Sliver 
Creature — Sliver
$0.29 #17454 0.67 19.3 years
All Slivers have "When this permanent enters, you may fateseal 1." (To fateseal 1, its controller looks at the top card of an opponent's library, then they may put that card on the bottom of that library.)
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Cards similar to Mesmeric Sliver expected a card that isn't here?
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Taunting Sliver82%
$2.41↑#9878↑0.24↓3.1 years↓
"Sliver creatures you control have "When this creature enters, goad target creature an opponent controls.""
Dormant Sliver78%
$0.39↑#150860.6119.6 years
"All Slivers have "When this permanent enters, draw a card.""
Harmonic Sliver76%
$1.11↑#3880↑1.31↑19.9 years
"All Slivers have "When this permanent enters, destroy target artifact or enchantment.""
Lavabelly Sliver73%
$0.55↑#5471↑0.707.2 years↓
"Sliver creatures you control have "When this creature enters, it deals 1 damage to target player or planeswalker and you gain 1 life.""
Constricting Sliver73%
$0.40↑#6797↑0.43↓12.1 years↓
"Sliver creatures you control have "When this creature enters, you may exile target creature an opponent controls until this creature leaves the battlefield.""
Regal Sliver72%
$0.76↑#9780↑0.57↓3.1 years↓
"Sliver creatures you control have "When this creature enters, Slivers you control get +1/+1 until end of turn if you're the monarch. Otherwise, you become the monarch.""
Watcher Sliver71%
$0.13↓#180130.27↓19.9 years
"All Sliver creatures get +0/+2."