Razerblast

The razerblast's armor is hot. Any creature grappling the razerblast or Grappled by it takes 5 (1d10) Fire damage at the end of that creature's turn.

When the razerblast drops to 0 hit points, a flaming orb in its chest explodes, destroying the razerblast's body and scattering its armor as shrapnel. Creatures within 10 feet of the razerblast when it explodes must succeed on a DC 12 Dexterity saving throw, taking 21 (6d6) Piercing damage on a failed save, or half as much damage on a successful one.

The razerblast makes three melee attacks.

Melee or Ranged Weapon Attack +6 to hit, reach 5 ft. or range 20/60 ft., one target. 6 (1d6 + 3) Piercing damage, or 7 (1d8 + 3) Piercing damage if used with two hands to make a melee attack, plus 3 (1d6) Fire damage.