(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
Jamie Wakefield famously got Verdant Force, but there are many options
The kicker cost can be anything, from paying extra mana to discarding a card, tapping a creature, or sacrificing lands
To make it easier to jump in with friends, most sets get preconstructed Commander Decks built around a specific theme or playstyle
It's also the most loosely constructed in terms of overall synergy, which might put some players off, though Y'shtola itself is likely the best face commander of the four
The biggest problem facing this deck is figuring out the mana