Red Slaad

The slaad has Advantage on saving throws against spells and other magical effects.

The slaad regains 10 Hit Points at the start of each of its turns if it has at least 1 Hit Point.

The slaad makes three Injecting Claw attacks.

Melee Attack Roll: +6, reach 10 ft. Hit: 10 (2d6 + 3) Piercing damage. If the target is a Humanoid not cursed by a slaad, it is subjected to the following effect. Constitution Saving Throw: DC 14. Failure: The target is cursed unawares, and a minuscule slaad egg is implanted in it. Removing the curse destroys the egg.

Over 2d4 × 10 days, the egg gestates. In the final 24 hours, the cursed target feels unwell; its Speed is halved, and it has Disadvantage on D20 Tests. At the end of this time, the egg turns into a Slaad Tadpole, which chews out of the host and kills it.