Regeneration [Limited Edition Beta] Green where X is the number

where X is the number of Zombies you control

Set: Modern Event Deck 2014 Type: Legendary Planeswalker — Elspeth Mythic Cost: {2}{W}{W} +1: Create a 1/1 white Soldier creature token

Set: Odyssey Type: Sorcery Rare Cost: {2}{G} Create a 3/3 green Elephant creature token

at the beginning of each of your upkeeps for the rest of the game

or triggered ability

Regeneration [Limited Edition Beta] Green where X is the numberSet: Limited Edition Beta 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.)