Round 1
Charlarn tries to slow down, but fails to convince the Astral plane of gravity's new direction.
Iggy full defends. (ooc: Additional time doesn't effect your chances, except for the bonus on succesive rounds. However, I will let you intentionally fail a check in order to gain the bonus with advanced planning. I was hoping Manual of the Planes would have more information, but when I finally got my copy in hand last night I found that the rules for subjective gravity apparently changed significantly in 3.5.)
One of the crossbowmen begins falling up and slightly away from you, on the defensive.
Wisdom Check (Native Modified) Githyanki X-R (1d20+3=17)
Opale continues to drop, readying an action to cast Glitterdust if she can catch two or more Githyanki in the area of effect.
The other crossbowman remains still, full defending.
Wisdom Check (Native Modified) Githyanki X-S (1d20+3=10)
One of the Githyanki longbowmen fails to move.
Wisdom Check (Native Modified) Githyanki B-G (1d20+2=15) He fires an arrow at Charlarn, casting a spell even as he knotches arrow to bow.
Bow Attack with Quickened True Strike v Charlarn (1d20+6+20=28, 1d8+1=7) The Cleric is hit for
7 damage even at the extreme range (-10 for >5 range increments not included in above roll.)
Another bowman (also failing to move) full defends.
Githyanki B-F Wisdom Check, Native Adjusted (1d20+2=10)
Planus casts a quickened Divine Favor and prepares to come to a stop when the Githyanki are close enough. (Readies an action, intentionally fails the roll for this round.)
One of the Githyanki Bowmen begins to fall up at an angle away from you, on the defensive.
Githyanki B-L Wisdom Check, Native Modified (1d20+2=17) The angle he has chosen will place him on the side of you opposite from the crossbowman who is also in motion.
Ducane full defends.
Zack succesfully adjusts his course in an effort to bring a Githyanki into melee range. (Pick one. If it is one that is in motion, make an intelligence check to calculate the intercept on the fly.)