What is the most damage that can be done in one round on your turn?


I was surprised that this question has not been asked.

I want to find out what the most damage that can be done in a single round?

Here are the rules.

  • Rules from Official Hardcover books only.
  • Any official playable race can be used.
  • No optional rules, other than those listed here.
  • Multiclassing and feats are permitted.
  • Characters can be up to LV 20
  • Standard point buy for stats.
  • No Magic items.
  • No infinite loops we are not trying to break the system. We are trying to find the maximum damage in a reasonable setting.
  • Consistent effects only. Random elements like wild magic cannot be used.
  • Epic Boons are permitted if you use the Aberrant Dragonmark feat.. You can choose the boon you would like.
  • No outside help. Permanent summoned creatures are permitted, and considered to have already been summoned.(find steed, familiar, homunculous.. etc..) Their damage can be added to yours in the calculation.
  • Assume one average target with no unusual defenses.
  • All attacks hit.
  • All saves are passed.
  • Polymorph is allowed, but I suspect there are better methods.
  • Any attack or combination of spells and attacks can be used provided you are following the rules.
  • Include the Maximum rolled damage as well as the average damage, where average is calculated using min+maximum /2 to calculate it.

I understand that a lot of you don’t like optimization questions. But try to leave me a comment before you give me a negative vote. I will address the issue and fix it(If possible).

This post is for people who do enjoy the theory craft and challenge. I think it will be interesting to find out what the damage limit is.