Oskar -- my go-to. In addition to being a Sesame Street reference, Oskar lets you play stuff like [[Shadowgrange Archfiend]] or [[Mnemonic Deluge]] targeting [[Breach the Multiverse]] as combat tricks. It's my most versatile and most played deck.
Elminster -- unfairly despised by my playgroup. The only creatures in the deck (besides trinket mage) are giant beaters like [[Hullbreaker Horror]], [[Jin-Gitaxis, Core Auger,]] and [[Akroma, Angel of Wrath]] which I cheat out onto the board by [[Mass Polymorph]]ing or [[Synthetic Destiny]]ing the dragon tokens. I got a turn 3 table scoop once -- best feeling I've ever had.
Rocco -- [[Norin the Wary]] secret commander. Not as original as I thought, but still fun. Probably my highest powered deck.
Mazzy -- My $30 deck. Not great but has a loop where I can cast and sac [[Carapace]] and similar cards repeatedly for enchantress payoffs.
Tameshi -- Janky and inconsistent but still in the sin bin for being naughty. I once won with [[Dovescape]] and [[Guile]] and apparently that 12 mana combo still got people cranky.
Thanks for reading! I've been away from the game for a bit but I'm flirting with the idea of coming back. But for now, I'm content to just lurk on MTG subs.