I already mentioned Rattleclaw Mystic and Icefeather Aven, and I think a full four of each is perfectly fine
Benjamin Wheelers Dark Souls Tale: A Masumaro, First to Live Altered by Rachel Kester of Bay Paint Studios Imagine a world where the haunting landscapes of Dark Souls come to life on the canvas of Magic: The Gathering cards
The key is that custom doesnt mean from scratch and painful. You can start from an existing card and edit from there, which is the fast lane
You can view Demonic Tutor as a second copy of every single card in your deck - which is innately powerful in a format like Commander where youre only allowed one copy
Lotuslight Dancers essentially recreates one of the best tutors in the format, Buried Alive, but this time on a body
Its especially powerful with cards that have an additional downside to cast, like discarding a card or losing life