Here you go:
Sekhma: Legendary, Raksha Mystic - Arcane Dark - Event Keys Only
Call of the Sun: Transform Blue Gems to Skulls and transform Brown Gems to Yellow. Deal X damage to an enemy, boosted by all other allies' Magic.
Raksha Bond / Insulated / Sun's Glory (Gain 3 Magic on Red Gem matches.)
Also, I had to tweak my script a bit because I was not expecting something, turns out there is minor info regarding mythics through October now.
Forest of Thorns - Yasmine's Chosen - Divine Fey
Spell name: Spirit of Nature
Mist of Scales - Euryali - Divine Naga
Urskaya - Asbjörn Doomclaw - Daemon Wildfolk
Spell name: Roar of Anguish