DeckedOutEDH released a video gushing over the cards power level, in both regular Commander and cEDH
Countermagic : Mystic Snake, Frilled Mystic, Draining Whelk Reanimation : Karmic Guide, Phyrexian Delver, Extraction Specialist Milling : Manic Scribe, Thieves' Guild Enforcer, Sage's Row Denizen Self-Milling : Stitcher's Supplier, Satyr Wayfinder, Balustrade Spy Discard : Burglar Rat, Mesmeric Fiend, Sin Collector Goading : Insufferable Balladeer, Jeering Homunculus, Vengeful Ancestor "Gain Control" effects : Hostage Taker, Agent of Treachery, Gonti, Lord of Luxury Clones : virtually all of them, though a few are decently pricey
There are convoluted infinites you can achieve with Medomai, but the card is ultimately pretty fair
An oddball from Coldsnap that brings with it the baggage of a slow-trip, Mishras Bauble is a card that anybody can play in a pinch that also supports a number of archetypes well
Garl, quit crying and give me your brain tissue
Discard your hand, then draw eight cards