mtg syr gwyn commander deck EDH Deck Gwyn, Hero of Ashvale 100 Magic Cards Custom Deck Knights Equipment Made with a soft fabric top to reduce damage to cards during play and a non Syr Gwyn, Hero of Ashvale

Read More: Strixhaven spoilers are incoming 2 The Ur-Dragon The two best Dragons in Commander both come from the same five-color lineage

Both also require you to already have something out on the board to use them effectively on and as a result he seems to be best suited to the mid range decks

Glare of Subdual could be a techy card

Spellseeker Spellseeker gets a cheap instant or sorcery from your deck, kind of like a Tribute Mage for spells

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