Example Beast Bondmaster 1.8 Companion: Winged Panther

Flyby. The winged panther doesn't provoke an opportunity attack when it flies out of an enemy's reach.

Pack Tactics. The winged panther has advantage on attack rolls against a creature if one of the winged panther's allies (including the Beast Bondmaster) is within 5 ft. of the target and the ally isn't incapacitated.

Harry. The Beast Bondmaster can use a bonus action to designate one creature within 5 ft. of the bear as the bear's Harry Target. Whenever the bear makes an opportunity attack against its Harry Target, if the attack hits, the Harry Target's speed is reduced to 0 until the end of the current turn. The bear will continue to Harry the target until the target dies, the bear is incapacitated, or the Beast Bondmaster uses another bonus action to change the bear's Harry Target.

Claws. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 1d6 + 2 slashing damage.

Pounce. The Beast Bondmaster can expend one Loyalty Die and use a bonus action on the Beast Bondmaster's turn to direct the winged panther to pounce on its Harry Target. The winged panther flies up to its speed in a straight line towards its Harry Target. If it ends the movement within 5 ft. of its Harry Target, it makes a melee weapon attack against it. If the winged panther flies at least 10 ft., the attack has advantage. If the attack hits, add the Loyalty Die to the attack's damage roll.

Grapple. The Beast Bondmaster can expend one Loyalty Die and use a bonus action on the Beast Bondmaster's turn to direct the winged panther to make a melee weapon attack against its Harry Target. If the attack hits, it adds the Loyalty Die to the damage roll, and the target is grappled. Until this grapple ends, the target is restrained. If the Beast Bondmaster or the winged panther attacks another target, the grappled target is no longer grappled.

Second Wind. The winged panther gains its own Second Wind. On the Beast Bondmaster's turn, the Beast Bondmaster can use a bonus action to cause the winged panther to use its Second Wind, regaining hit points equal to 1d8 + the Beast Bondmaster's fighter level. Once the winged panther uses this feature, it must finish a short or long rest before it can use it again. This is in addition to the Beast Bondmaster's Second Wind ability, and both can be used once per short rest.