Simultaneously planeswalk to both of them
When MTG wants to make something similar to a sixth color, its usually a draft or set gimmick, like snow mana or colorless mana in Oath of the Gatewatch
I'm also reminded of Mari, the Killing QuillMari, the Killing Quill, who groups together a few creature types like Vaan does, and provides us with an incentive to deal combat damage to our opponents frequently
Badass Normal: Leo somewhat qualifies, considering he pretty much did most of the work in defeating the first Dark Signer before his sister took over (using his deck)
[1] There are two exceptions: Draft formats (like Cube, or Limited) can have 4-16 players
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