When I do my last test for Moleman, I'm going to try to remember to include this glyph as well. Glyphs only require a single army test for their initial playtest, so after I get that done, we can pass this guy to the playtesting phase.
Sooner this one's passed, the sooner Chronos can be initially playtested for real. But, definitely play a few informal games with Chronos first to try to check his power levels - good idea.