Sunderbringer
Weapon (Longsword), legendary (requires attunement)
You gain a +2 bonus to attack and damage rolls made with this weapon. Sunderbringer ignores all damage resistances, and bypasses magical effects or spells such as shield, cutting through all defenses without hindrance.
When dealing damage with this weapon, you can choose to have it deal force damage instead of its normal damage type.
As an action, you can tear a hole in the fabric of reality, creating a rift that lasts for 30 seconds, unless dismissed (no action required). A creature can expend 5 feet of movement to enter the rift and be transported instantaneously. The wielder chooses the destination if it is a location they know, otherwise, the rift leads to a random location on a random plane of existence.