Ice Cage is a common Enchantment — Aura card from Magic 2011 (M11), collector number 57. Current market price: $0.03 (foil $0.15), TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature can't attack or block, and its activated abilities can't be activated. When enchanted creature becomes the target of a spell or ability, destroy this Aura.