Syr Konrad, the Grim Every Commander player knows Syr Konrad, the Grim
Most madness cards get a highly reduced cost when played for madness, so as long as you have a somewhat decent mana base on the field, you can draw a ton of cards while also playing everything you discard
To condense the card as much as possible: if you target exactly one opponent or a permanent an opponent controls with an instant or sorcery, and nothing else, Zevlor copies it for each opponent you have
That makes Bilbo's Ring a bit rarer and more challenging for Commander players to find, hence its price
Zodiac Rabbit Finally, we have something I wouldnt be afraid to pet
They also banned Shahrazad