The invisible monster summoned by Wizard Reed wasn't invincible. Wizard Reed himself knew that aside from being invisible, it had no other advantages.
Compared to the Blood-Sucking Worms and Vampire Bats, this invisible creature was nothing.
However, it was not detectable by Spirit Sensing, which made it interesting.
Of course, all major spells needed time to prepare. Wizard Reed was trying to buy himself time, using the Blood-Sucking Worms and Vampire Bats as a bluff.
He had originally thought the Vampire Bats would have cleared these ants from his surroundings, but to his surprise, these flies and ants were still alive and kicking.
Yet, Wizard Reed's two previous attacks weren't entirely without gain. At least, he discovered that his powerful adversary didn't seem inclined to attack proactively. It wasn't that it was unwilling, but rather that it *couldn't*.
That was good news for Wizard Reed. At least, he no longer had to worry about his major spell being interrupted.
