User blog:Mr. Bambu/D&D Homebrew Calc: Betrayal of the Council

Premise
A staple event in the history of the Table is that one of the members of Mordenkainen's Council betrays him- Otiluke, member of the council, betrays the others, killing many (including Bigby). The fight between Otiluke and the other eight of the council results in the territory of Greyhawk being practically destroyed, with most settlements needing severe repair.

I'll calc that for a very god-tier feat.

Calc
The territory is roughly 30 miles wide, meaning a 15 mile radius, or 24140.16 meters. Plug that into the standard explosion calc for a ground-based explosion.

24140.16^3*((27136*1.37895 + 8649)^(1/2)/13568 - 93/13568)^2 = 1.13 Gigatons of TNT, Small Island level.

That said... this was performed by a lot of them. Eight mages battled to produce this. So divide the potency by eight.

We get 141.32 Megatons of TNT, or Mountain level. Nothing too impressive, I'm afraid, but it does show the potency of a peak tier mage (the Council would be level 50+). That said... we have a surprisingly clean power climb, from this. Coincidentally, Vaerun scales.

Tally
Explosion Wipes Out Greyhawk: 1.13 Gigatons of TNT, Small Island level

Individual Mage Strength: 141.32 Megatons of TNT, Mountain level