Ysande wants to scream, wants to vomit, wants to rip the disgusting creatures from herself and then huddle in a corner somewhere.
But after all, she's quite used to the idea of sacrificing her own wants and needs on the altar of expedience. With a shudder of revulsion she ignores the vile insects, knowing that she can withstand their feeding a little longer. The same can't be said for some of her more heavily-afflicted companions. Her first instinct is to aid Kaj, but the unleashing of his unholy power seems to have brought his situation more or less into stability.
Big, on the other hand, still seems to be in serious trouble. Covered in the vermin, it doesn't look like he'll be able to stand their attentions for long. Thinking fast, she grabs the leather tube from her belt and sorts deftly through its contents. It only takes a moment to retrieve what she needs, the scrolls already organised for easy access in an emergency like this one. She closes the distance to Big and reaches out to rest one hand on his arm between two of the bloodsucking creeps. Her other hand holds the scroll, which begins to glow and disintegrate as she incants its text.
The resulting spell boosts Big's toughness. It's a quick fix, but with luck it might just enable him to hold on long enough to deal with the oversized mosquitoes before they drain him dry.
OOC: Use a scroll of Bear's Endurance on Big. +4 Con for 3 minutes.