Trollhide

Enchant creature
Enchanted creature gets +2/+2 and has "{1}{G}: Regenerate this creature." (The next time the creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

The List

Magic 2014

Enchant creature
Enchanted creature gets +2/+2 and has "{1}{G}: Regenerate this creature." (The next time the creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

Magic 2012

Activating the ability granted to the enchanted creature causes a “regeneration shield” to be created for it. The next time that creature would be destroyed that turn, the regeneration shield is used up instead. This works only if the creature is dealt lethal damage, dealt damage from a source with deathtouch, or affected by a spell or ability that says to “destroy” it. Other effects that cause the creature to be put into the graveyard (such as reducing its toughness to 0 or sacrificing it) don’t destroy it, so regeneration won’t save it. If it hasn’t been used, the regeneration shield goes away as the turn ends.

If the enchanted creature is dealt lethal damage and is dealt damage by a source with deathtouch during the same combat damage step, a single regeneration shield will save it.

To work, the regeneration shield must be created before the enchanted creature is destroyed. This usually means activating its ability during the declare blockers step, or in response to a spell or ability that would destroy it.

Trollhide needs to be attached to the creature as the ability that creates the regeneration shield is activated, but after that, the regeneration shield will be created and remain in effect even if Trollhide is no longer attached to the creature.