Keen Smell. The liger has advantage on Wisdom (Perception) checks that rely on smell.

Pack Tactics. The liger has advantage on an attack roll against a creature if at least one of the liger's allies is within 5 feet of the creature and the ally isn’t incapacitated.

Pounce. If the liger moves at least 20 feet straight toward a creature and then hits it with a claw attack on the same turn, that target must succeed on a DC 15 Strength saving throw or be knocked prone. If the target is  prone, the liger can make one bite attack against it as a bonus action.

Multiattack. The liger makes two attacks: one with its bite and one with its claws.

Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 16 (2d10 + 5) piercing damage.

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) slashing damage.

Mutate. If the liger mutates, until the end of the round, all of the liger's allies within 120 ft. get +1 to their AC and can make an additional attack for each time the Liger has mutated.