Alpha Girallon

Aggressive. As a bonus action, the girallon can move up to its speed toward a hostile creature that it can see.

Multiattack. The girallon makes five attacks: one with its bite and four with its claws.

Bite. Melee Weapon Attack: +10 to hit, reach 5 ft, one creature. Hit: 10 (1d8+5) piercing damage. If the target is a creature other than an undead or a construct, it must succeed on a DC 17 Constitution saving throw or lose 10 (3d6) hit points at the start of each of its turns due to an infected wound. Each time the Girallon hits the wounded target with this attack, the damage dealt by the wound increases by 10 (3d6). Any creature can take an action to stanch the wound with a successful DC 12 Wisdom (Medicine) check. The wound also closes if the target receives magical healing.

Claw. Melee Weapon Attack: +10 to hit. reach 10 ft., one target. Hit: 10 (1d8+5) slashing damage.