Strong how, exactly? It's no slouch, sure, but what specifically do you find to be overpowered about it?
You know whats better then getting dazed? Stunning PCS with a Nymph Power.If I'm building an encounter, assuming I was making a tough enchounter, I could have 3 Spirehorns or 6 Nymphs vs a party. 6 Range Stuns vs a NAD at level 8 WILL stun someone, and then the Nymphs can use their move and punch power to all bounce around and put 6-9 punches into someone. The Three Behemoths at best would do a total of 6 attacks with zero action denial and zero movement boosting riders.The Nymphs can also impose a neat Save Ends damage as well as their move and punch. Finally the Nymphs do not have "much less" HP then a Behemoth. TWO Nymphs have about 20% less and almost double the offensive power. Additionally controlling 2 skirmishers is much harder then controlling a single fat brute.12 Punches vs 6 Behemoth Stomps, math doesnt lie thats just double as good.
This creature is within the bandwidth that is considered baseline. With the right encounter synergy including her might stand out from the 250 or so other encounters in a campaign.For example the damn troll/quickling encounter in Scales of War will always rank up there in terms of annoying things I've had the pleasure of killing.Skirmishers are supposed to be that way!
I think they're overpowered. We fought multiple Autumn Nymphs in an encounter once and it wasn't pretty at all.It actually gets worse due to that all Heroic tier Nymphs are rather nasty:Spring Nymph has Sleep as a spell and Dominate recharge on save.Wood Nymph has a remove from play option that recharges on save. Autumn has a StunSo put them all together with a party of 4? Watch party have one dominated character, one unconscious character, a stunned character, and another character in a tree...