While they're varied none of them have particularly game-breaking effects
Even having just one Broom to combo with Mickey is valuable, but try to keep Mickey alive until you have a resource to recover him, like Hades, Lord of the Underworld, Part of Your World, or Dr
Since it has the changeling ability, its technically a Wraith, and it will unlock cards from all five colors if you want to go beyond mono-black
They get to enjoy one anothers company on the island of unwanted, broken, and overtuned misfit Commander Legends cards that made casual Commander a worse experience to play
Gwenom, Remorseless looks like a massive removal magnet, though anything that gives you the power of the Citadel is worth consideration