Arachnus Web (M12 163)

Enchantment — Aura • Mana cost: {2}{G} • Magic 2012 • Common

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 this Aura.

Illustrated by Karl Kopinski.