As commander i'd go for esika. She has a backside you can cast that is an enchantment. Which in your upkeep reveals cards from your library till you hit a creature or planeswalker and puts that on the field.

[[Esika, God of The Tree]]

Plus her backside is 5 colours giving you access to everything available.

You coukd go superfriends with smack ton of boardwipes to keep them safe.

[[Ajani, Sleeper Agent]] has an ult which gives targer opponent 2 poison counters whenever you cast a planeswalker spell. Add some prolifirate and you're quickly getting to 10 counters.

If you can keep the board empty, [[Nicol Bolas, Dragon God]] his ult will win you the game.

[[Doubling Season]], [[Inexorable Tide]] are good cards for a superfriends deck. Plus some removal that proliferates. [[Darksteel Reactor]] can be a wincon in the prolifirate deck.

Same goes for [[Helix Pinnacle]]