Added maybeboard for all the cards from strixhaven. Possibly adding more dragons for the dragon boardwipe. Thinking Gadrak, the Crown-Scourge , Terror of the Peaks and Goldspan Dragon possibly. Mainly the first one.

Nice ok, I like Draconic Intervention a lot here, from playtesting mine it kind of feels like it wants a wipe but also plays a decent number of creatures, so if you can figure out a way to just wipe your opponent's board that seems pretty solid. However you'll need some expensive spells to make that work. Maybe you could try something like Boon of the Wish-Giver which has a cheap cycling and high CMC, and/or you could go with the treasure token cards from strixhaven like Magma Opus or Creative Outburst .

I actually like Terror of the Peaks a lot too since you will have plenty of mana to throw him down and follow up with another spell or two, and if he lasts even a turn with Song out providing a chain of creatures it's probably gg.

Some of the protection spells here seem a little awkward for a Song deck since you have to discard your hand and don't get much more than a trigger out of playing them proactively. Saw It Coming is probably the best route since you can store it out of your hand. Also not really seeing any Yorion interactions here.

Ok I love the idea of using those. That synergizes so well with Gadrak, the Crown-Scourge and Goldspan Dragon !! I was also thinking about putting in Rielle, the Everwise .

Also, the reason I play Yorion, Sky Nomad is because of me going up against mill so often. It is another thing I can play if I wiff on a land on the draw. Also I believe if I exile Song of Creation on the etb, I get to keep all the cards I draw instead of exiling them because it comes back at the end step. I could be wrong though.

How funny would it be to make Dragon's Approach a thing. Plenty of ways to discard the cards :D