GE: you didnt put me on the map. Center me (I am 3x3 squares) three to the left of B18.
Attacks: 22+19, 22+13, 22+14, 22+3, 20+16= 41 (Leader), 35 (B8), 36(B18), 25(picking up Vangar, no dmg), 36 (bite)
DMG: 2d6+12 (22, 19, 19) + 1d6 Con dmg each (6, 2, 5), save DC22, bite 1d8+6=12.
I delay until I am hasted. I use my pull to pull anyone I hit 10 feet into the air, where they cannot reach me OR anyone on the ground (Escape Artist or Str Check at DC26, or they can cut free by sundering the end of the tendril (making it shorter but still usable), but these 60 foot tendrils are huge weapons (large weapon required to sunder at all), I have DR 10/adamantite, am immune to crits, and otherwise it requires 13 post-DR slashing dmg in a single attack after beating me at an opposed attack roll and taking an AoO, and they fall for 1d6 dmg if they make it), and I bite one of them, preferably the leader. I hold Vangar safely in the air one to the left of B18. I make sure that my tendrils are at such a heigh that he and only one grabbed opponent are within fighting distance at once.
With my hasted action, I drop an empowered Ice Storm centered on the bottom right corner of the square one to the right of B13...this will hit B13, B12, B2, B16, B18, B8, B5, B14, B4, B19, and B7 (18 impact, 12 cold) (Do I take dmg beucase the tips of two of my tendrils are in the area? If it is highly reduced or no dmg then OK. Otherwise I may have to move it. Really, I ought to get like 9/10 cover or sometihng because only a little bit of my body is inthe area)
"The angry tree monster lashes out with his many tendrils, gently affixing one to the back of the dwarf's armor and ripping through other targets, then lifts them all helplessly into the air, bending his trunk to take a bite out of one of them. He then roars out a stream of icey shards, bellowing so loadly that the ground shakes, and more materialize in the air, raining down upon the bandits."
EDIT: reflects Telustiel's actions...