"Magic 2012", +"can't attack", +!defender, +!detain, +!"you may change" (4)
Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated.
At the beginning of the end step, if enchanted creature's power is 4 or greater, destroy Arachnus Web.
Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
Harbor Serpent can't attack unless there are five or more Islands on the battlefield.
When enchanted creature becomes the target of a spell or ability, destroy Ice Cage.
Enchanted creature can't attack or block.
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