Have you ever considered something like Mana Flare? Yeah it helps your opponents out, but it'd help you burn quicker?

Braid of Fire continuesly adds to your mana pool on your upkeeps.

Was thinking about Mana Flare, but as u said, it help my opponents too. But if I ever get one, Ill definetly try it out to pump my mana and end the game in one turn.

Actually, if I take a closer look, it might work better than damage doubler (cheaper and giving 1 more damage with R(X) burns), so I might really consider cuting one and fit it in!

About Braid of Fire, I even got this card, but unlike in my Kumano, Master Yamabushi deck, I dont really have enough mana sinks to use this mana in upkeep.

Thanks for suggestions and upvote Love-in-Theory

No problem! I'd been Brainstorming on a creatureless Keranos deck myself, thinking about running things like Mana Flare, Possibility Storm, and just anything chaotic, kinda like a storm :')

Yeah,I too do have more storm-like version of this deck, running simple burn spells, Sphinx-Bone Wand and Epic Experiment combo with graveyard recursion spells that loop it with copy spells for casting whole deck at once.

Also, seen Keranos land discard deck with 80 lands and things like Land's Edge that could treat people with 14 or more damage at instant speed.