Call DM

When cast, this spell allows the caster to communicate directly with the Dungeon Master while still in character. The caster may make any request of the DM, but must succeed on persuasion checks each time, with the DM deciding the DC and having the authority to simply refuse a request without a roll if the result would be too powerful or catastrophic. 

While communicating, the character speaks as normal, but the DM can only be heard by them, so any nearby creatures that understand the players spoken language will have no clue who they are talking to.