mtg commander precons duskmourn How to Upgrade All Four Magic The Gathering Duskmourn Commander

Well, two copies of one card but still

Shadow in the Warp discounts the first creature spell that you cast each turn and punishes opponents for casting noncreature spells

If it's a token or play aide, it will often have an ad on the back (assuming the play aide isn't double faced)

The discard effects are what you want to zero in on here, with a notable one being the combination of Nath with Sadistic Hypnotist to Mind Twist your opponents

See if you can spot the Strixhaven twist on popular cards in Erode, Planar Engineering, and Mana Sculpt

At the beginning of your end step, if three or more artifacts entered the battlefield under your control this turn, create a 3/3 colorless Phyrexian Golem artifact creature token