Dead wishing of races

Wish is the mightiest spell a mortal creature can cast. By simply speaking aloud, you can alter the very foundations of reality in accord with your desires. This spell is a very dangerous variant of the Wish spell, and has the power to eliminate a whole race at once.

The Basics of the wish spell.

“The basic use of this spell is to duplicate any other spell of 8th level or lower. You don't need to meet any requirements in that spell, including costly components. The spell simply takes effect.

Alternatively, you can create one of the following effects of your choice:

• You create one object of up to 25,000 gp in value that isn't a magic item. The object can be no more than 300 feet in any dimension, and it appears in an unoccupied space you can see on the ground.
• You allow up to twenty creatures that you can see to regain all hit points, and you end all effects on them described in the greater restoration spell.
• You grant up to ten creatures that you can see resistance to a damage type you choose.
• You grant up to ten creatures you can see immunity to a single spell or other magical effect for 8 hours. For instance, you could make yourself and all your companions immune to a lich's life drain attack.
• You undo a single recent event by forcing a reroll of any roll made within the last round (including your last turn). Reality reshapes itself to accommodate the new result. For example, a wish spell could undo an opponent's successful save, a foe's critical hit, or a friend's failed save. You can force the reroll to be made with advantage or disadvantage, and you can choose whether to use the reroll or the original roll.

You might be able to achieve something beyond the scope of the above examples.”

(copied from the Wish spell explanation. Note: this is not the whole explanation of the wish spell!)

 Although wish has almost unlimited power, the greater the wish, the greater the unforeseen consequences. For example, wishing that a villain was dead might propel you forward in time to a period when that villain is no longer alive, effectively removing you from the game. To prevent those unwanted consequences to happen, you can include extra conditions, in the example you can add that the villain dies at the moment you finish the spell, and that he dies because of a heart attack. The latter is needed because otherwise the cause of death could be a worldwide disaster, removing you from extinction too. Still, even with those two conditions, there can be unwanted side-effects because of loopholes in the wish. If you for example use the name of the villain, the spell can also kill other people with the same name, or if the name is a nickname, kill no one.

The creation of the spell

To deliberately exclude all these results, a enormous thick appendix of ‘fine print’ is needed. This appendix has to be so large that thinking of all the loopholes and writing down all the extra conditions takes you around 1500 years, twice the lifetime of an elf, and 20 times the lifetime of a human! This means that 4 consecutive generations of elves has to write the wish and the appendix. (You cannot have four elves working on the appendix at the same time, because attunement with the spell scroll is needed while writing it.) Each of the writers must have a intelligence of 18 or higher, and every time they want to work on the spell they have to succeed an arcana(intelligence) check with DC 20. If they don’t succeed the arcana check, they can’t make the arcana check again until after a short or long rest.

 Beside of the enormous long time needed to write the appendix, the whole appendix has to be uttered when the spell is casted. Assuming that speaking takes 35% of the time needed to write down the same text, and that the 1500 years include a 8 hours long rest every 24 hours, the time needed to utter the whole appendix is 1500*0,35*(1-8/24) = 350 years of non-stop speaking. Such a long time of speaking is impossible, so this is solved by just referring to the appendix, a magical equivalent of:”…in accordance of the conditions named in the enclosed appendix”. To enclose the whole appendix, the same magic as seen with the Bag of Holding, the Handy Haversack and the Portable Hole is used, but then the ‘Bag’ is the spell scroll. However, this means that when the spell is casted, the whole appendix will spill out the spell scroll, filling a volume of 64 cubic feet around the caster, so make sure you are in a relatively open space.

Casting the spell

 The product of the creation just a small spell scroll, with only two sentences written in mystical cipher. The first line is the Wish spell, which has to be casted first. Then the second line has to be spoken out loudly by the caster of the Wish spell, which must be a wizard who masters Silvian and Druidic, and also understands Dwarvish, Elvish and Infernal. All the members of the first race the caster will name after casting the spell will be eliminated spontaneously, including halflings of this race. The spell also consumes 10 diamonds in the left hand of the caster with a total worth of 25,000 GP, or 1 diamond worth 20,000 GP.

 The stress of casting this spell weakens you. After enduring that stress, each time you cast a spell until you finish a long rest, you take 1d10 necrotic damage per level of that spell. This damage can't be reduced or prevented in any way. In addition, your Strength drops to 3, if it isn't 3 or lower already, for 2d4 days. For each of those days that you spend resting and doing nothing more than light activity, your remaining recovery time decreases by 2 days. Finally, there is a 33 percent chance that you are unable to cast wish ever again if you suffer this stress.