How much diplomacy would a player need to convince a young Dragon to do its budding?

Do you have any advice for running a D&D game with just 1 player?

Summoning monster spells bug me

3rd miss in a row=critical hit for unlucky players

How would you bring the Invoker from 4e to 5e?

Download Theurge: https://media.wizards.com/2016/dnd/downloads/UA%20Non-Divine%20Faithful%20SFG.pdf

Can a Monk Shadow Step in/to open air?