Thessalia’s Gleypa Loga

By crushing the jar in your hand, subjecting yourself to 10d8 fire damage (ignoring resistance and immunity), and spending 2 turns to chant the incantation, you are able to create the pale blue flame known as the Gleypa Loga ("Devouring Flame"). 

The Gleypa Loga cannot be dispelled unless the caster wishes so. Any creature affected by the flame is considered under the effects of Anti-Magic Field. While casting this spell, the caster cannot cast any other spell until this spell has been dispelled.

Once the Flame has been created, you can control it in a variety of ways. Only one affect can be active at a time, and last for 1 minute, or until another effect is chosen. An effect can't be used twice in a row.

• You can shoot out a Fireball of Devouring Flame at a point within 500ft that you can see in a 45 foot radius. All creatures within the radius must succeed on a Dexterity Saving Throw or take 10d8 fire damage that ignores resistances and Immunities or half as much on a success. 
• You can create a Wall of Devouring Flame at a point within 500ft that you can see. The Wall can be up to 50 feet long and 50 feet high. When it appears, all creatures within 10 feet of the Wall must succeed on a Dexterity Saving Throw or take 16d6 fire damage, ignoring resistances and Immunities, or half as much on a success.
• You can create a Shield of Devouring Flame. You coat yourself in an armor of fire. All creatures that make a Melee attack against you take 5d10 fire damage that ignores resistances and Immunities. Ranged attacks against you have no effect, as the Devouring Flame melts the projectile into nothingness. Spell effects do not affect the caster, Line effects end when they reach the caster, and AOE spells do not effect the caster.
• You can create the Creeping Devouring Flame. Choose a target that you can see within 500ft of you. That target takes 5d6 fire damage at the end of each of its turns that ignores resistances and Immunities; this does double damage to structures as it melts the material. At the start of each affected creature's turn, the flame will spread to any object or creature within 10 feet of an affected target.