Madness is such a strong effect as it turns discarding, something that can be a downside, into extra value with a discounted spell
However, Braids's controller can benefit more from such an ability by constructing a deck to plan accordingly for this ability and always get the optimal value out of the effect, directly playing cards like the infamous Blightsteel Colossus and Eldrazi titans for free
Suspend cards often have lower costs to suspend then they would otherwise have through their regular casting costs to balance the downside of waiting to cast it
Infinite tokens lets you activate Baylens abilities as much as you want
Sword of Feast and Famine is definitely a favorite, too: The moody sky, the glowing moon, and the fact that you can untap all of your lands by dealing damage to an equipped creature make it viable just about anywhere
Experience iconic fairytales with a twist