Tyrion had been poisoned in a previous battle with the Dark Elves and could not defeat the daemon, but Teclis arrived at the last moment, destroying the daemon with his magic.
Tyrion had been poisoned in a previous battle with the Dark Elves and could not defeat the daemon: the daemon smashed him aside with ease, then moved to kill Alarielle. Fortunately, Teclis arrived at the last moment, destroying the daemon with his magic.