Legendary
You gain a +2 bonus to attack and damage rolls made with this magic weapon.
Tapping in to the spirit animal of your ancestors, this weapon grants you additional power based on your totemic attunement. Once per week after a long rest or when you gain a new barbarian level, you can choose one of your totems to align the weapon to and gain the bonus listed.
Bear: Furious Attacks. While raging, you deal an extra 2d6 damage on melee weapon attacks. The damage increases by 1d6 when you reach 6th level (2d6), and 14th level (3d6).
Eagle: Flyby. While raging, if you make a melee weapon attack against a target after Dashing, your target takes an extra 1d6 damage and you don't provoke opportunity attacks from them. The damage increases by 1d6 when you reach 6th level (2d6), and 14th level (3d6).
Elk: Charge. While raging, if you moves at least 15 feet straight toward a target and then hit it with a melee weapon attack on the same turn, the target takes an extra 1d6 damage. If the target is a creature, it must succeed on a Strength saving throw (DC 8 + your Strength bonus + your proficiency bonus) or be knocked 5 feet away. The damage increases by 1d6 and the distance pushed by 5 feet when you reach 6th level (2d6, 10 feet), and 14th level (3d6, 15 feet).
Tiger: Pounce. While raging, if you moves at least 15 feet straight toward a creature and then hit it with a melee weapon attack on the same turn, that target must succeed on a Strength saving throw (DC 8 + your Strength bonus + your proficiency bonus) or be knocked prone. Additionally, you deal an extra 1d6 damage to prone targets. The damage increases by 1d6 when you reach 6th level (2d6), and 14th level (3d6).
Wolf: Pack Tactics. While raging, you have advantage on the first attack during your turn against a creature if at least one of your allies is within 5 feet of the creature and the ally isn't incapacitated. Additionally, you deal an extra 1d6 damage against a creature if at least one of your allies is within 5 feet of the creature and the ally isn't incapacitated. The damage increases by 1d6 when you reach 6th level (2d6), and 14th level (3d6).
Proficiency with a greataxe allows you to add your proficiency bonus to the attack roll for any attack you make with it.