This spell is intended for a BBEG and is unable to be learned by any player for reasons that include the mechanics of this spell. Also materials listed are fictitious and are to be filled with similarly rare items at the discretion of the DM.

 TL;DR: this a universe destroying spell to make some campaigns for.

this spell can be cast over a longer course of time without the spell failing such as 2 hours a day over the course of one year.

When this spell is cast a five foot diameter void like absence appears centered on the caster. This absence punches through all planes of existence and dimensions.

Anything that enters the absence disappears as if it never existed. This absence destroys everything within it from mana streams that would  connect two speaking stones, to the connections that the DM and the players have with the universe.

If a player enters the absence they are unable to create another character for this campaign as their connection to the games universe has been severed.

The DM is unable to manipulate or alter the mechanics or the existence of the absence through methods such as time reversal, Deus ex machina, mulligans, having an npc using wish to stop this spell, or other such methods.

The only way for the spell to be stopped is for a player to cast wish to cease it's expanding and devouring which the DM is required to tell the players in the form of meta gaming.

Once the absence is dispelled it leaves a massive pit like void space that punches through all planes of existence and can be used as gateway between planes. 

Within an area of where the absence will be in the next 24 hours the DM and the laws of the universe begin to lose hold.

• The DM cannot create new encounters within this area and must use existing encounters as written in the dm's guide or from other official or previously run campaigns.
• All characters become full casters and gain access to all classes spell lists requiring no spell focus or material components to cast spells.
• Characters gain 5 times as much experience than usual.
• Spell slots become unlimited but you cannot cast them at a higher level unless approved by the DM.
• Treat all short rests as long rests and the characters no longer need to sleep, eat or drink.
• While running from the absence you will always move 50% faster than the growth of the absence regardless of how fast that is.

The absence grows 75% larger per day and will devour the entirety of the planet in 30 days along with all connections the DM and the players have with the universe, effectively leaving it to die without anyone to stop the absence. All beings within the universe will attempt to help the players at the discretion of the DM

A table will be provided to tell you how large the diameter of the absence is at the end of each day as well as key points.

• Day 1: 9 ft
• Day 2: 15 ft
• Day 3: 27 ft      
• Day 4: 47 ft
• Day 5: 82 ft      (divine beings take notice / can tell players about existence / potential alternate start point)
• Day 6: 144 ft
• Day 7: 251 ft
• Day 8: 440 ft
• Day 9: 770 ft
• Day 10: 0.25 miles
• Day 11: 0.44 miles
• Day 12: 0.78 miles
• Day 13: 1.36 miles
• Day 14: 2.4 miles         (impossible to hide regardless of how far under ground the spell was cast / unless within the underdark)
• Day 15: 4.18 miles      (the heavens are breached exposing a floodgate to the astral plane for spirits to return to the planet.)
• Day 16: 7.32 miles
• Day 17: 13 miles
• Day 18: 22 miles         (planets crust has been breached exposing the underdark)
• Day 19: 39 miles
• Day 20: 69 miles         (nice)
• Day 21: 120 miles        (point of no return / movement speed does not exceed rate of growth)
• Day 22: 210 miles        (xp gain increases to 10 times in range)
• Day 23: 368 miles
• Day 24: 645 miles
• Day 25: 5.5% of the planet
• Day 26: 9.3% of the planet        (outer core breached exposing a gateway for the hells to and all their evils to escape from)
• Day 27: 16.3% of the planet
• Day 28: 28.5% of the planet
• Day 29: 50% of the planet           (planets core has been destroyed and can only maintain its shape through the reconstruction and maintenance of the gods. After this point the world becomes flat)
• Day 30: 100% of the planet         (bye bye universe sorry we couldn't make it)

Fun facts: most major events are roughly based off actual things.

• 1st major event: the deepest man made structure
• 2nd major event: highest level of clouds
• 3rd major event: roughly average crust thickness
• 4th major event: the outer core's depth
• 5th major event having roughly half the planet left would officially create a world edge to fall off of just like flat earthers believe exists.

Extra fun fact: the entirety of your universe would be destroyed in roughly 103.5 years according to estimates of how large the unobserved universe is.