Cataclysmic Eruption

Version 1.1 fixes :

Range of spell is reduced to 2 miles, or 3.2 kilometers for scale. If you want that changed please comment

Added New Eruption. It is now possible to use the staff of lightning to create a storm eruption. 

List of Items is still being created, but I am NOT making a homebrew list. There are too many items made every single day for me to keep up.

User creates a small volcano on any land that has a source or implanted source of any ability of choosing (i.e place acid on ground to create acid eruption) that will duplicate with this spell underneath and can be used from any place in the Cosmere. this does not work on any surface not connected to ground. i.e boat, floating rock.

the spell will use any material that comes from the earth, including birthstones like amethyst etc

this attack will effect all targets and can not miss

to start attack, state you are putting [insert material here] in the ground and starting the process for the spell, you are vulnerable in this position and will have to rely on your teammates to protect you. 

it takes three rounds to set the spell. when the spell is set, you have two rounds to get everyone else out of harms way. at this time, you can make a protection spell around you to try to stop the eruption from harming you

on success:

target(s) has a 75% chance of death, 25% chance of survival
roll 1d20 for each target to see which outcome.
if roll = 15 or higher, target(s) survives on 1 hp unless target(s) have immunity from objects or defenses, spells are rendered useless, but if conditions are met, target(s) have their current hp unchanged
if roll = 14 or less, target(s) are dead, unless target(s) have immunity from objects or defenses, spells are rendered useless, but if conditions are met, target(s) are on 1 hp
either way, all targets are harmed

character remains safe if protection spells are used

 on fail:

target(s) are dead unless unless target(s) have immunity from objects used or defenses, spells are rendered useless, leaving the target(s) on half hp, and the character is rendered unconscious and on one hp.

if character gets hit, the casting time resets

If used, the spell ends the adventure and your character will be forced to take a long rest. 

If characters abilities to not include resistance or immunity to object used or are not using a protection spell or object, your character is dead, regardless whether or not it succeeds or fails.