Spellcrafting

[Godshoe]

Greetings, spellas!
We all know how grandiose is magic in D&D and lot of ours love coming from it. In 3.5 there was ability to create new and experiment with old spells. It was fantastic because every mighty wizard strives to make his mark in history of magic! And I tried find rules about it in 5e, but DMG didn't say anything about this process for players. Just a note about how it should looks on paper.

So I'm interesting in this kind of downtime craft - how did you do it in your campaigns?
How you spend time and sources for making something new in Weave? Maybe some interesting ideas?
Rituals, quests for knowledge and rare reagents?

[DragonSorcererX]

I would say that it is similar to the Magic Item Creation Rules in the DMG and the Rarity that you would use for the time and cost nescessary to do it would be the same of the rarity of a spell scroll of the same level of the one that you are trying to create... if you find that this is too easy, double the costs and the time nescessary to research the spell, everything else is just rule of thumb.