Regeneration (IE) [Intl. Collectors’ Edition] San Diego Comic-Con 2014 if it doesn't have the

if it doesn't have the same name as another creature you control or a creature card in your graveyard

it deals 1 damage to any target

discard it

choose target permanent that player controls

Regeneration (IE) [Intl. Collectors’ Edition] San Diego Comic-Con 2014 if it doesn't have theSet: Intl. Collectors Edition Type: Enchantment Aura Common Cost: {1}{G} Enchant creature (Target a creature as you cast this. This card enters the battlefield attached to that creature.) {G}: Regenerate enchanted creature. (The next time that creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)