LMoP

Attacks against stirges are made with disadvantage.
You move where your target moves until either dies. Your attacks can’t miss or be Defended/Interposed against. Attacks that miss you damage your target instead.
- Latch On.1d4+2.
On hit: Latched On.

Advantage on attacks if an ally is within 1 space of the creature
- Slash.2d8+2.
(or Shoot, Range 8)

The first time this dies, reset to 1 HP instead (excluding minions).
- Sickening Claw.1d4+8.
On damage: Dazed.
source: Nimble GM Guide
- •Shoot Web.1d8+2.
(Range 6) On hit: Restrained
- •Bite.2d8+4.
(Hampered target) Poisoned (magical healing ends)

Whenever an attack misses you, deal 1 psychic damage in return.
- •Cleave.2d8+6
- •Shoot.1d8+3
Given weapons and armor enchanted by the Forge of Spells, these are not your average Bugbear.

- Acidic Touch (2x).1d6+{3}

Sheds a bright light (Reach 3). Advantage on saving throws against any spell. Cannot be Blinded, Charmed, Dazed, Frightened, Poisoned, Slowed, or Taunted.
Explode into a fireball on death, dealing 2d6 damage (Reach 2).
- Fire Blast (2x).1d8+5
While holding his glass staff, can sacrifice his next turn to reduce damage by 1d10. If a melee attack, reflect half that damage back to the attacker. (1/round)
- •Magic Darts.
In either order, move 6 and (3x) 1d4+1 damage (Range 8).
- •Freeze.
AoE, Reach 2, 3d6 damage. DC 12 STR save or be Restrained (Re-save at end of each turn). Then, move 6.
When 60 HP or less, Glasstaff's Shield becomes 1d20.
Glasstaff is dying! 30 more damage and he dies. Until then, can use his turn to teleport up to 10 spaces. (1/round)

Can climb without a movement penalty
Advantage on Stealth checks in rock terrain
- •Tentacles.2d10.
on hit: make Beak attack
- •Beak.1d10

King Grol can move without penalty while grappling a medium or smaller creature.
- •Grab.
Move 8. 1d12. On hit: grappled.
- •Smash.
3d12
- •Get in Here!
Summon a Goblin (d6) minion
When King Grol is reduced to 62, he is enraged and gains advantage on all attacks.
King Grol is dying! 30 more damage and he dies. Until then, he can summon a Goblin (d6) minion after every turn.
The Black Spider ignores movement restrictions caused by webbing.
- •Web.
Cover a Reach 3 circle on the floor in webbing, creating Difficult Terrain. Creatures within: DC 13 DEX save or Restrained until the end of their next turn.
- •Shadow Shroud.
(1 use) Gain 20 Temp HP and advantage on Stealth checks until it is depleted.
- •Shadow Strike.
Move 8 and 1d8+6 damage (Range 6) On crit: Dazed.
- •Spellweaver Staff (Forge Enhanced).
3d8+10 damage. If target is Restrained, crit on 7 or 8.
At 75 HP, immediately cast Web and spawn 1 Giant Spider/hero within the webbing.
The Black Spider is dying! Out of desperation she crushes the Spellweaver Staff to transform into her Drider form with 40 HP. In this form, she gains heavy armor and can walk along walls and ceilings at normal speed. Her Spellweaver Staff attack becomes Venomous Bite, with the same description.

Invisible when submerged in water. Dies if it leaves the water.
- •Slam (2x).1d6+8
- •Whelm.2d6+4.
On hit: Grappled.
On grapple, attempts to drown creature.

- •Slam.(2x) 2d8+2
- •Shapeshift.
Change shape into any Medium or Small humanoid. Equipment is not transformed.
- •True Form.
Transform back into its true form. Creatures within 6 spaces make a DC 13 WIL save or are Frightened for 3 rounds.