It looks like you're new here. If you want to get involved, click one of these buttons!
I don't believe Spellbinders spawn until the 2nd level of the champ spawn in Old Haven.
A couple of times over the past month or so I've run to Old Haven to train resist and found no Spellbinders (On Pacific). After killing a few skeletons (10? 12?), the Spellbinders start spawning.
Drachenfels is so close to death, even the spellbinders left.