Trynn, Champion of Freedom + Silvar, Devourer of the Free Trynn and Silvar are the alternate partner commanders from Commander 2020 , and together they create a cute little value engine for a human-focused Mardu deck
A two mana 2/1 with the Vipers ability is a pretty nice two drop for Limited, as it is reasonably likely to chip in some extra damage all game, so the fact this can also bounce something is nice Cleave Shadows is certainly somewhat situational, but I think youll be surprised by how many board states there will be where it lets you kill something
Professionally printed playtest cards become more useful once you are testing the same list repeatedly, bringing it to different playgroups, or preparing several decks
At the beginning of combat, Gogo becomes a copy of another creature you control (while keeping its own name), which lets you turn value engines, utility pieces, or heavy hitters into immediate threats
So, if I drop turn one Sol Ring or turn two Arcane Signet, that's one after him for artifacts