At Amearin's warning, Jan likewise pauses, turning from her wary watchfulness at the kobold minions to watch for the clouds to dissipate enough to target the hulking lizard chieftain. With a murmur and a gesture reminiscent of a scullery maid emptying a pot of water, she conjures into being a translucent slick beneath his feet! "Some days sure take it out of you! Why not have a lie down, pal?" she calls out mockingly.

Spoiler: Actions
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Jan waits for the Stinking Cloud to expire before casting Grease, Reflex DC 17 else he falls. My intents for location are:
1) Catch Shukak in the grease
2) Not catch friendlies
3) Require Shukak to make at least one acrobatics check to do more than 5ft step toward Amearin and Jan
4) If it happens to be possible to catch another hostile while meeting all of 1-3 then great, but I doubt it

Spoiler: Stats
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Janstina Silentall
F Chaotic Good Gnome Sorcerer, Level 5, Init 4, HP 13/37, Speed 20
AC 21, Touch 13, Flat-footed 19, CMD 11, Fort 4, Ref 4, Will 4, CMB -1, Base Attack Bonus 2
Acidic Ray Ranged (1d6+1/2lvl, x2)
Dagger Melee (1d3-2, x2, 19-20)
(+4 Armor, +4 Shield, +2 Dex, +1 Size)
Abilities Str 6, Dex 14, Con 14, Int 10, Wis 8, Cha 23
Condition Mage armor: +4 AC, 1 hr
Mirror image: 3 images, 5 minutes dur.
Shield: +4 Shield AC, 9 rds remaining