Wow, the forums have been laggy today.
Buell bought two scrolls, one of spider climb and one of invisibility (Replacing the invisibility scroll she used last match and adding a second spider climb).
Buell starts the match with a scroll in hand. She casts from it CL - (1d20+2)
CL check against DC 4.
Assuming that check rolls, she uses her movement to walk to, then up the nearest Pillar, Y11, (which is 10' tall) then falls prone for extra protection.
Assuming I don't roll very poorly, end of turn.