One card in particular that I think could use another look is Patron of the Moon: (EDHREC Rank: #620) While the card is expensive, its Moonfolk offering ability allows you to discount the mana cost by sacrificing a Moonfolk, and you can cast it an instant speed
Getting to cast Channel in Commander is a hell of a drug, and thankfully its gated behind a three drop that then needs you to have a power seven or greater creature, and then have that three drop (and you!) survive a full turn cycle
So if you use Pok Kid , you could search for one of the four Pokmon V-UNION cards, since one piece is a Pokmon
Its chase cards already have foil printings, and the one first-time foil in the drop is the least valuable card in the drop (Qasali Slingers, at $4.52)
Your first goal is to prevent your opponent from finishing the job
A lost dog that wandered off 1000 years ago