Just being able to replay your Instants and Sorceries from your graveyard
#2 - Miscut into a filler: Similar to sheet edge miscuts, miscut cards adjacent to fillers might not show a 2nd card even though they otherwise would
With Ursula, Deceiver of All, this value proposition is taken even further thanks to the cards What a Deal ability, which allows players to reuse song cards from their discard pile
You can make a deck that revolves around the number of humans you have in play, and for that, youll need many cards that create human tokens or care about you having humans
This can +2 to draw a card and scry two which is nice card flow, and then -3 to exile the top card of your library and then make a number of 1/1 flyers equal to the mana value, which is also very strong in Type Four with its elevated casting costs and low land count