Amphisbaena

Huge Beast, Unaligned
Armor Class: 12
Hit Points: 60 (8d12 + 8)
Speed: 30 ft., swim 30 ft.
STR
19 (+4)
DEX
14 (+2)
CON
12 (+1)
INT
1 (-5)
WIS
10 (+0)
CHA
3 (-4)


Source: Tales from the Yawning Portal