Runner's Bane
Dragon's Maze — common
Enchantment — Aura
Runner's Bane rulings:
2013-04-15: If the enchanted creature’s power increases to 4 or greater, Runner’s Bane will be put into its owner’s graveyard as a state-based action.
2013-04-15: The enchanted creature can still be untapped in other ways, such as by Aurelia, the Warleader.