The Test of the Starstone - The Grue

[Bom Ferro]

"Downwards, the trials grow ever more dangerous. No, my only chance to to slay any rivals I have and attain enough magical power to break the enchantment blocking the stairs myself!"

The masked kobold barks, and attempts to cast a spell.
Your readied action goes off, and you cover the ground around and below the kobold in Grease...

He concentrates, attempting to complete his spell while trying to maintain his balance:
Concentration: (1d20+3)[14] vs DC 17 or lose the spell
Reflex save: (1d20+3)[4] vs DC 17 or drop prone

He fails on both counts, and quickly stands up again.

Map:
{table=head]||A|B|C|D|E|F|G|H|I|J|K|L|M|
|#|#|#|#|#|#|#|#|#|#|#|#|#|#|#
1|#||*|||@|||||||||#
2|#||#|#|#|\r|#|#|#|#|#|#|#||#
3|#|<|#||||||#|?|?|?|?|?|?
4|#|#|#||||||#|?|?|?|?|?|?
5|#||||.|.|.||#|?|?|?|?|?|?
6|#||||.|k.|#|#|#|?|?|?|?|?|?
7|#||||.|.|.|?|?|?|?|?|?|?|?
8|#|||||||?|?|?|?|?|?|?|?
9|#||||||||?|?|?|?|?|?|?
10|#||||||||?|?|?|?|?|?|?
11|#||||||||?|?|?|?|?|?|?
12|#|#|#|#|#|+|#|#|#|?|?|?|?|?|?[/table]

Spoiler: Notes

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Your familiar is still scrutinizing B1(11 turns left).
There is a trap rune on the ground of E2.
There is a small, reptilian humanoid on E6.
There is a bookcase leaning on the wall on C12.
There is a closed door across the room, at E12.

---------------------------------------------
Status of Cedric, Conjurer/Archmage:
13/13 HP, Cautious, In Combat

Time passed: 0 days, 0 hours, 0 minutes, 54 seconds.
Daily resources left:
Spells:
3/4 1st-level

Mythic:
Mythic power 5/day

Spoiler: Map

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I hope the map serves its purpose.
In true roguelike fashion, you are represented by the @. If you prefer a different color, please say so.
* This is Peabody, your owl familiar.
# denote walls
< denote stairs(these lead upwards)
+ denote closed doors
\ denote open doors
r this is a trap rune
? denote regions you can't see yet
. Area covered by Grease

General information:
Stone walls(ordinary masonry, climb DC 20)
Flagstone floor(no bonuses or penalties to movement)
dim lighting level(glowing crystals in the walls at about 10ft height, every 20ft)