Free action, Prescience
(1d20)[7] (- if 12 or better, use it as a roll for a saving throw if one is needed this round)
Move 5ft forward to W31
Standard action, cast Snowball (defensively, since I suspect she might be in reach of the glabrezu - yikes...)
Concentration DC17
(1d20+12)[26] (includes the -3 for negative levels)
Ranged touch attack at the derakni in Y23-Z24:
(1d20+3)[20] (includes the -3 for negative levels) for
(5d6)[15] - EDIT: actually 4d6 for
10 total, rolled in OOC - cold damage , cc(23)
(1d20+3)[17] cd
(5d6)[18]
CL check vs SR (includes the -3 for negative levels): best of 2 rolls thanks to Eldritch Breach,
(1d20+5)[24] and
(1d20+5)[12]
If the derakni takes damage, it needs to make a Fort save DC17 or be staggered for 1 round.
The odds of this to work are amazingly low, but hey, desperate times!
Swift action use 1 mythic power point for Wild Arcana, casting Sleet Storm (as a swift action I don't think this can provoke an AoO), centered on W24-X25 (40-ft radius), between 10 ft and 30 ft of altitude. This should hopefully force any flying demon to land in order to attack, unless Vorlesh takes the time to dispel it.
Spoiler: Stats
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Elrembriel Elf Wizard 6 / Archmage Mythic Tier 1 (3 negative levels) Alignment N
HP 56 / 56 (normal max HP is 71)
Speed 60 ft & 1 extra move action
Init 6
AC 17 (19 vs chaotic creatures)
Touch AC 13 (15 vs chaotic creatures)
Fort +4
Ref +4
Will +5 (includes the -3 for negative levels)
CMB +2
BAB +3
Acid splash +3 (1d3+1 acid, 20/x2) (includes the -3 for negative levels)
Dagger, cold iron -1 (1d4-1, 19-20/x2) (includes the -3 for negative levels)
Str 8 (-1)
Dex 16 (3)
Con 13 (1)
Wis 12 (1)
Int 21 (5)
Cha 10 (0)
Powers/day: Mythic Power 1/5, Prescience 6/8, Pearl of Power 1/1, Exposed to Awfulness 1/1, Terendelev's Scale of Protection 2/3
Active spells: Mythic Haste (1 round left), Major Image (ends at the end of this round), Mage Armor (6 h), Message (60 min), Heightened Awareness (60 min), Mirror Image (6 min, 3 images as rolled in OOC), Magic Circle against Chaos (60 min), See Invisibility (60 min) and Terendelev's protection (cold and electricity resistance 30, 190 min)