palkia pokemon card Origin Forme V - 039/198 - Ultra Rare - Sword & Shield Ultra Rare Card Type Pokemon Card - Shining Legends

Discard modes when at instant speed are also more useful

Just make sure both Energies are different

I look at things like the watermark matters and outside of the game assistance cards as being fun includes in Cube, the one-off mechanics like blurry, triple strike or protection from black borders all work within the rules of the game provided that youre open to the idea of them, the squirrel theme feels completely black border if the game allowed for more whimsy (easily a topic for another article), and a good chunk of the legendary permanents seem very well suited for Commander

Its hard to ignore a repeatable mana source that can pretty easily make this much mana, though, so get on it