Polukranos, World Eater [Theros] Gremlin You can only use each

You can only use each effect of "Zexal Catapult" once per turn

As long as "Umi" remains face-up on the field any damage from attacking monsters to your Life Points becomes 0

He has "friends" in places both high and low

from your Deck to your hand

if this effect was activated this turn (and was not negated): You can Special Summon this card from your GY

Polukranos, World Eater [Theros] Gremlin You can only use eachSet: Theros Type: Legendary Creature Hydra Rarity: Mythic Cost: {2}{G}{G} {X}{X}{G}: Monstrosity X. (If this creature isn't monstrous, put X +1 +1 counters on it and it becomes monstrous.) When Polukranos, World Eater becomes monstrous, it deals X damage divided as you choose among any number of target creatures your opponents control. Each of those creatures deals damage equal to its power to Polukranos.