B-Tier: Average Commanders (23-30% Win Rate) Near the expected win rate for 4-player Commander
However Pairing one of Yurikos artifact-enablers Hope, Automaton, Gingerbrute with Covert Technician can create an efficient loop where each successive trigger can place the same creature into play
These cards are not legal without prior agreement from the other players in the game, and may steer your playgroup to avoid other, similar cards
Rhystic Study is by far the game's best card of its kind, effectively taxing each opponent 1 mana each time they cast a spell Spells are constantly cast in Commander, so Rhystic Study's controller will draw lots of extra cards if the opponents aren't paying 1 extra mana
as a theologian I'd be remiss if I didn't post at least one angel, so here's Avacyn, the Purifier by James Ryman
And of course, people will slam it right in their Arcades, the Strategist decks