Dandu
First Post
You do realize that while the bat is pointing out which square the Ogre Mage is in, the party is unlikely to be standing around ineffectively, right?Uh, no. The evading the summoned creatures for several rounds before coming back to finish the job is a different resolution than the situation where the summoned creatures simply die incidentally, without any extra effort, while the ogre mage is severely damaging the rest of the party. No cone of cold is required to simply survive eight rounds of being charged by a dire bat, particularly with a 50% miss chance should the ogre mage happen to continue to be invisible.
Chances are, once they've been attacked by/notice the presence of the Ogre Mage and have summoned a monster, they are likely to be doing something other than munching on popcorn and watching the bat go at it.