Veiled Serpent 

Enchantment
$0.06 #27935 0.05 27.9 years
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."
Cycling
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Cards similar to Veiled Serpent expected a card that isn't here?
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Opal Acrolith84%
$0.26↑#304330.29↑27.9 years
"Whenever an opponent casts a creature spell, if this permanent is an enchantment, it becomes a 2/4 Soldier creature."
Opal Caryatid84%
$0.11↑#305350.0027.9 years
"When an opponent casts a creature spell, if this permanent is an enchantment, it becomes a 2/2 Soldier creature."
Slipstream Eel84%
$0.06#260520.21↑23.9 years↓
"This creature can't attack unless defending player controls an Island."
+1 more matching line