While many commanders on this list allow a player to accrue value by forcing players to discard, few are able to provide such a startling advantage by doing so as Tergrid.
Plus, just look at that swagger
Instant Color tag templates(None) Wrap in Vigor Regenerate each creature you control
Honorable Mention - Plunder the Graves Some of these series didn't do much innovatively
On the front, Cosima is a little hard to parse, but essentially, she works like so: at the beginning of your upkeep, you exile Cosima
Giving your team +2/+2 often buffs creatures enough to attack profitably, and its easy to spew artifacts across the board so the trigger deals lots of damage (which you can multiply with Furnace of Rath and Dictate of the Twin Gods), making Sentinel Sarah Lyons look like a powerful aggressive commander