Regeneration [Alpha Edition] AR7 you may cast target instant

you may cast target instant card from your graveyard without paying its mana cost

where X is that creature's power

Set: XY: Evolutions Type: Fire Rarity: Ultra Rare Retreat cost: Colorless

−2: Put a +1/+1 counter on each creature you control and a loyalty counter on each other planeswalker you control

so here's a second one

Regeneration [Alpha Edition] AR7 you may cast target instantSet: Alpha Edition Type: Enchantment Aura Rarity: 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.)