Giant Slayer

Weapon (any axe or sword) Rare
You gain a +1 bonus to Attack and Damage Rolls made with this Magic Weapon.

When you hit a giant with it, the giant takes an extra 2d6 damage of the weapon's type and must succeed on a DC 15 Strength saving throw or fall prone. For the purpose of this weapon, "giant" refers to any creature with the giant type, including ettins and Trolls.