Multiattack. The behir makes two attacks: one with its bite and one to constrict.
Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 22 (3d10 + 6) piercing damage.
Constrict. Melee Weapon Attack: +10 to hit, reach 5 ft., one Large or smaller creature. Hit: 17 (2d10 + 6) bludgeoning damage plus 17 (2d10 + 6) slashing damage. The target is grappled (escape DC 16) if the behir isn't already constricting a creature, and the target is restrained until this grapple ends.
Lightning Breath (Recharge 5–6). The behir exhales a line of lightning that is 20 feet long and 5 feet wide. Each creature in that line must make a DC 16 Dexterity saving throw, taking 66 (12d10) lightning damage on a failed save, or half as much damage on a successful one.
Swallow. The behir makes one bite attack against a Medium or smaller target it is grappling. If the attack hits, the target is also swallowed, and the grapple ends. While swallowed, the target is blinded and restrained, it has total cover against attacks and other effects outside the behir, and it takes 21 (6d6) acid damage at the start of each of the behir's turns. A behir can have only one creature swallowed at a time.
If the behir takes 30 damage or more on a single turn from the swallowed creature, the behir must succeed on a DC 14 Constitution saving throw at the end of that turn or regurgitate the creature, which falls prone in a space within 10 feet of the behir. If the behir dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 15 feet of movement, exiting prone.
I encountered this monster in the Out of the Abyss adventure.
Depends on how many players.
I would charm the dragon with a nat20 and a bunch of bonuses, then use it to fight Tiamat
So I made a Swamp Variation, I'm not sure if it's good or not but here.
why does its constrict attack deal slashing damage?
Its claws
Although Behir are diurnal, so maybe this one was driven out of its territory and is forced to lie low during the day and hunt at night, being unfamiliar with the aboveground world?
That’s exactly right and it’s a great outlook to have
I'm the DM too, and all of my friends keep trying to ruin the adventure, so I'm going to throw this at them and see what happens. hehe
All of them...
i'm gonna use this thing in a campaign my father and I are co-DMing. it's gonna be epic.
This thing vs a cyclops, who wins?
Evasion would work
1. just 1.
Probably 4 would be balanced, 5 if you wanna give a challenge. The Behir is CR 11, which means that a party of 4 adventurers who are each level 11 would expend 25% of their resources fighting just one of these things. Keep in mind CR is not an exact science. I threw 3 of these things against a party of 5 level 8 characters and expected them to struggle, but the party practically wiped the floor with them. I also threw a single Behir against a party of 5 level 5's and they kicked it's ass. To be fair they had 2 strong NPCs helping them, but they probably would have won regardless.
My monk keeps egging me on to have the party fight a big thing. I showed him these stats. He stopped asking.
My DM just threw this at us expecting us to die..... We freaking tamed it.
vore monster
so this was the creature in malcanthets mirror.....
Idk how you tame a creature that you can have a conversation with, and it's an eViL creature so befriending it wouldn't really work either.