Do you just need the mythic map pack to play all the playlists?

or do you also need Mythic II pack? I really don’t want to shell out 1200MSP to be able to play in every playlist…might as well just get ODST.

Not all of the playlist no, some playlists are non-DLC req and some are.

Lone Wolves - No DLC req
Team Slayer - No DLC req
Team Doubles - All DLC req
Team Snipers - All DLC req
MLG - All DLC req
Team SWAT - All DLC req
Rumble Pit - All DLC req
Social Slayer - No DLC req
Social Skirmish - All DLC req
Action Sack - All DLC req
Multi-Team - No DLC req
Team Mythic - All DLC req
Social BTB - All DLC req
7 on the 7th - All DLC req