Exacerbating supply issues are scalpers seeking to profit from the hobbys popularity by purchasing new releases at retail price before selling them for higher prices via online marketplaces
You can effectively fight all of your opponents creatures until your Polukranos dies, then you can bring it back for its Escape cost and then its a 12/12
Commander preconstructed decks are one of the easiest ways to start playing Magic because they give you a complete ready-to-play deck in one sealed product
Spellbooks Adaptive Armorer Amorphous Axe Citizen's Crowbar Cloudsteel Kirin Conqueror's Flail Fireshrieker Fishing Pole Krovod Haunch Leech Gauntlet Lion Sash Mace of the Valiant Maul of the Skyclaves Shield of the Realm Sigiled Sword of Valeron Thran Power Suit Thunder Lasso Thoughtsteal Sprites Bitterblossom Brazen Borrower Faebloom Trick Faerie Fencing Faerie Mastermind Flitterwing Nuisance Glen Elendra Guardian High Fae Prankster Hypnotic Sprite Likeness Looter Pestermite Picklock Prankster Spell Stutter Vendilion Clique Voracious Tome-Skimmer Look for Alchemy: Lorwyn packs and cards in MTG Arena
While not available as a commander option, you can also speed up the ThreatenThreatens by combining this with Sigurd, Jarl of RavensthorpeSigurd, Jarl of Ravensthorpe, though you wouldn't be getting much utility out of Chapter IV
Hissing Quagmire becoming a Blinking Spirit is kind of exciting
