Scarab, Suncatcher 2014
CR 10 beast
Gargantuan beast, unaligned
STR20 (+5)
DEX14 (+2)
CON18 (+4)
INT1 (-5)
WIS12 (+1)
CHA16 (+3)
Discordant Drone.
Creatures within 15 ft. of it can’t hear each other’s spoken words and can’t cast spells with verbal components.
Siege Monster.
Double damage to objects/structures.
Unstoppable.
Moving through difficult terrain doesn’t cost it extra movement and its speed can’t be reduced.
Source: Tome of Beasts 3 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details