Tiamat
G fiend, C,E
Armor Class 25
Hit Points 615 (30d20 + 300)
Speed walk 60, fly 120
STR
30
DEX
10
CON
30
INT
26
WIS
26
CHA
28
Saving Throws STR +19, DEX +9, WIS +17
Skills arcana +17, perception +26, religion +17
Senses darkvision 240 ft., truesight 120 ft., passive Perception 36
Languages Common, Draconic, Infernal
Challenge 30