Spellcasting. The Vai' Agos Mage is a 10th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 15, +7 to hit with spell attacks). The mage has the following spells prepared:
Cantrips (at will): Ray of Frost, Vicious Mockery, Eldritch Blast (2 beams)
1st level (4 slots): magic missile, shield, bane, command, fog cloud
2nd level (3 slots): gust of wind, spike growth, hold person, misty step
3rd level (3 slots): counterspell
4th level (3 slots): ice storm
5th level (2 slot): cone of cold, scatter
Legendary Resistance (3/Day). If the Vai' Agos Mage fails a saving throw, it can choose to succeed instead.
Orb of Resilience (Mythic Trait; Recharges after a Long Rest). The Vai' Agos Mage is bound to an Orb of Resilience.
An object with an AC of 15 that has 5 hit points. All damage done to the orb is reduced to 1, critical hits are worth 2. Once the orb has taken damage it is immune to all damage after the first source until the end of the turn.
Once the Orb is destroyed the Vai' Mage Dueler is able to use it's Mythic Actions and loses access to it's Legendary Actions.
The Vai' Agos Mage gains resistance to all damage types.
Cantrip. The creature casts a cantrip.
Suppressing Gale. All hostile creatures within 60 ft that the Vai' Agos Mage can see must make a DC 15 STR Save or be pushed back 10 ft. Failing by 5 or more the target is knocked prone.
Cantrip. The creature casts a cantrip.
Cast a Spell. The creature casts a spell from its list of prepared spells, using a spell slot as normal.
Alter Gravity (Costs 2 Actions). All hostile creatures within 60 ft that the Vai' Agos Mage can see must make a DC 15 DEX save to grab onto something to avoid this effect.
Until the Vai' Agos Mage next turn this action reverses gravity in a 30-foot-radius, 20-foot high cylinder centered on a point within range. All creatures and objects that aren't somehow anchored to the ground in the area fall upward and reach the top of the area when you cast this spell.
If some solid object (such as a ceiling) is encountered in this fall, falling objects and creatures stop there. If an object or creature reaches the top of the area without striking anything, it remains there, oscillating slightly, for the duration.