Desperate Spellcasting

Castille moves to the edge of the alcove just in time to see the kobold dart around the corner. In a somewhat desperate attempt to stop the little bugger dead in his tracks, Castille readies a sleep spell. He takes aim as deep into the adjacent tunnel as he can see and hopes for the best. A few elven words of enchantment later, and the spell is off.

Remember that a sleep spell has a 10-ft burst effect.

Kaspar, unwilling to let the kobold out of his sight, gives chase after Castille's spell goes off. Of course he's careful not to run into the tunnel before the spell hits. He's not too keen on falling asleep in the middle of a battle. And if he has the time, he'll grab the thunderstone from his pack and stow it somewhere more accessible.