As the Ranger's hailstorm arrows spread 200 red bolts of energy across the tree, at least one of them met a bomb in flight. Explosions would still strip the leaves and weaker branches from the nearby trees...but at this range, the explosions would be far enough away not to affect the monster, and the Ranger was away in a stream of shadows before the detonation. The bombs are now taken care of...uselessly, to the chagrin of the elf...but the vamp still has at least 192 glowing projectiles streaking into and around the tree.