Bog Serpent {5}{B}
Creature — Serpent
This creature can't attack unless defending player controls a Swamp.
When you control no Swamps, sacrifice this creature.
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Orgg 85%
$0.28#31281
"This creature can't attack if defending player controls an untapped creature with power 3 or greater."
Goblin Mutant 85%
#30681
"This creature can't attack if defending player controls an untapped creature with power 3 or greater."
Gorilla Pack 83%
$0.14#26194
"This creature can't attack unless defending player controls a Forest."
+1 more matching line
Dark Triumph 83%
$0.31#23176
"If you control a Swamp, you may sacrifice a creature rather than pay this spell's mana cost."
Mind Swords 83%
$0.21#23844
"If you control a Swamp, you may sacrifice a creature rather than pay this spell's mana cost."
Chained Throatseeker 83%
$0.14#21023
"This creature can't attack unless defending player is poisoned."
Goblin Cohort 83%
$0.24#24308
"This creature can't attack unless you've cast a creature spell this turn."
Mogg Conscripts 83%
#27105
"This creature can't attack unless you've cast a creature spell this turn."
Silburlind Snapper 82%
$0.04#26997
"This creature can't attack unless you've cast a noncreature spell this turn."
Harbor Serpent 82%
$0.14#20206
"This creature can't attack unless there are five or more Islands on the battlefield."
Bloodthirster 82%
$32.32#2531
"This creature can't attack a player it has already attacked this turn."
Whimwader 82%
$0.11#31591
"This creature can't attack unless defending player controls a blue permanent."
Lurking Green Dragon 81%
$0.21#22222
"This creature can't attack unless defending player controls a creature with flying."
Bloodcrazed Goblin 81%
$0.18#25197
"This creature can't attack unless an opponent has been dealt damage this turn."
Veiled Serpent 81%
$0.04#27554
"When an opponent casts a spell, if this permanent is an enchantment, it becomes a 4/4 Serpent creature with "This creature can't attack unless defending player controls an Island.""
Ronom Serpent 81%
$0.18#27484
"This creature can't attack unless defending player controls a snow land."
+1 more matching line