mtg shadowmoor cards Gravelgill Axeshark [Shadowmoor] and characters to the world of MagicTM Counterbore · Shadowmoor (SHM) #33

Cards like Watcher of the Spheres and Warden of Evos Isle reduce the cost of all flying creatures you would cast, including your commander, reducing the hit that Commander Taxes can cause

Commanders who want to remove opponents libraries can come in a few different flavors

Counter Intelligence Counter Intelligence takes us to the sci-fi world of Sothera with a Jeskai deck focused on Charge Counters and Energy

The secret of Strixhaven itself

While Im not sure if it truly makes the cut in cEDH, you could also cast Return the Favor to make your own copy of the enters-the-battlefield ability of Thassas Oracle to win on top of their ability on the stack

Delve Strategies Delve unlocks potent spells through the wisely timed discarding of your graveyard