Armor Class undefined
Hit Points 5 + five times your ranger level (the beast has a number of Hit Dice [d8s] equal to your ranger level)
Speed 5 ft., swim 60 ft.
Senses darkvision 60 ft., passive Perception 12
Languages understands the languages you speak
Challenge —
Amphibious. The beast can breathe both air and water.
Primal Bond. You can add your proficiency bonus to any ability check or saving throw that the beast makes.
Binding Strike. Melee Weapon Attack: to hit, reach 5 ft., one target. Hit: 1d6 + 2 + PB piercing damage or 1d6 + 2 + PB bludgeoning damage (your choice), and the target is grappled (escape DC equal to your spellcasting save DC). Until this grapple ends, the beast can't use this attack on another target.
Tasha's Cauldron of Everything, p. 61