Amulet of the stars

This amulet shows a radiant star made of electrum and diamonds. While you are attuned to this magic item you can concentrate on three spells at once. When a effect that causes you to loose concentration on a spell you choose which spell ends. While you are attuned you live forever*, you can breath in a vacuum (space). Once while you are attuned to the amulet you can cause a comet to fall from the sky, by using an action to focus on your celestial powers you cause a comet to fall from the sky and crash to the ground at a point you can see up to 6 miles away from you. You must be out doors to activate it, or nothing happens and your chance is wasted. The comet creates a 100-foot-deep, 1000-foot-radius crater on impact. Any creature in that radius must make a DC 35 Dexterity saving throw, taking 60d10 Force damage, 60d10 fire damage, and 70d10 bludgeoning damage, or half as much on a successful save. The only down side to the amulet is that it takes up ALL of your attunement slots, even if you have more then the standard 3. None of the rules above and below can be bypassed in anyway, a wish spell will always fail, divine intervention is not enough to change it.

* you live forever, UNLESS you die of unnatural means. Such as combat... the point is that you are immortal. (You can’t die of disease or old age)

Notes: level 20 gravaturgy wizard., Damage, Combat