Gargantuan dragon, Challenge 20 Armor class 20, Hit Points 297 Speed 40 ft., burrow 40 ft., fly 80 ft. Attacks Bite, Claw, Tail, Frightful Presence, Fire Breath, Sleep Breath, Change Shape STR 27 (+8) DEX 10 (+0) CON 25 (+7) INT 16 (+3) WIS 15 (+2) CHA 19 (+4)