For folks interested, the Merchant Prince group played last night. Because we've switched from 4e to 5e at 15th level, people are getting used to their characters, and I've been gradually ramping up monster difficulty.
[My players: spoilers within. Please don't read.]
Tonight they fought three formorian giants in the first encounter. Two PCs got cursed with the evil eye (these formorians are tied to gnolls, so instead of the PCs getting lumpy they started to turn into hyenas instead. Same effect, different appearance, although they wouldn't have gotten disadvantage on attacks if they'd chosen to devour their own allies instead). The first formorian had fear cast on him by the bard, and it took him eight rounds -- EIGHT! -- to make his save. Already damaged, he got sniped by the party warlock using eldritch blast from hundreds of feet away. The second and third formorians managed to flank the party bard, but both were killed before they were able to smack her. In one case, the other warlock used blight to destroy his tree club (seemed balanced, cool but slightly sub-optimal to me to let the spell destroy a plant-based weapon instead of doing damage); in the other case, the rogue hopped from a tree onto his head and sneak attacked him. In this fight the battle master fighter made good use of moving people around and triggering extra attacks, and a phantasmal force kept one formorian suitably distracted.
There are six NPC elven archers traveling with the group right now. They're low level, but formorians have such a low AC that they were contributing about 40 pts of damage each round. Not too shabby.
The second fight was against a high level evoker and a high level rogue, both spies pretending to be someone they weren't. The evoker lead with an overchannelled cone of cold. Massive damage to everyone! I think two PCs made their save. Then the rogue (with poisoned blades) carved up the paladin, bringing him down to 8 hp.
Annnd... that's about as far as their luck held.
The evoker got locked into a forcecage and couldn't teleport out. He ended up committing suicide (or so it appears -- throat cut, blood everywhere, but he's still locked in the force cage so they haven't checked his body) out of a desire not to be questioned. The rogue took 50 pts of damage from three PCs, and she decided screw this, I'm running for it. She disengaged, ran, and hid. She didn't hide well enough (rolled an 18 stealth). The bard dimension doored the rogue to her vicinity and the rogue spotted her; one warlock sniped her through the trees, pushing her backwards and destroying her stealth; and the other warlock dimension doored the paladin to her vicinity and the paladin did almost 60 pts of damage to her with a smite. We ended the game with the rogue/spy unconscious and the warlock turning her into his thrall. Looks like the spy is about to turn sides...
Quote of the game, from the warlock: "I've decided that my most damaging spell is dimension door, because it lets me get the paladin close enough to smite things."
Overall, it was a fun fast triumph for the PCs. Even high-level NPCs don't last long against a team of 6 focused heroes. Next game in 2 weeks will be about questioning the spy, finding out how dead the wizard is (suicide was an illusion, and he's waiting for the force cage to drop to make an escape), and assaulting the place where the person whom the spy was imitating is being held.