Death Burst. When the eelfolk dies, it explodes in a burst
of pent-up electricity. Each creature within 10 feet of it
must make a DC 12 Dexterity saving throw, taking 7 (2d6)
lightning damage on a failed save, or half as much on a
successful one.
Hold Breath. The eelfolk can hold its breath for 1 hour.
Lunge. If the eelfolk moves at least 20 feet straight
toward a target and then hits it with a long knife attack on
the same turn, the target takes an extra 7 (2d6) piercing
damage.
Long Knife. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 4 (1d6 + 1) slashing damage.
Multiattack. The stormcaller makes two claw attacks. Claws. Melee Weapon Attack: +6 to hit, reach 5ft., one target. Hit: 6 (1d6 + 3) slashing damage plus 7 (2d6) lightning damage.