Priest of Titania is pretty good with your general. Depending on how consistently you get green mana, could be better than Mind Stone . Does look like a pretty explosive deck.

Problem with Priest of Titania And mostly all sorcery speed ramp spells that you cant cash them in on the same turn. Artifact mana albeit being slightly more fragile is so good when you can just chain your whole openings 7 through Mana Vault and a few signets.

Concordant Crossroads because at this point, why not.

Heya, really like your list, kinda curious why you run so many mana rocks in a green color though? Is it faster then just straight up ramp? Can't you afford to run ramp spells in your playgroup because they will outramp you? Also is it correct that you run 33 lands because of the amount of rocks you have?

I also have a mayael list, I don't need to make it as cut throat as yours and I like my green mana ramp :P But could you take a look at mine and my planned upgrades? Could use some input from someone who knows what he is doing ;)

Never mind my comment :p Just read through the comment section and it became quite clear what your intentions are :P Would still love it though if you could take a look at my deck; I don't plan to make it super cut throat cause I want to run some of the splashier stuff like warstorm, rings of brightheart surge and lurking predators.