Mulligans
General Mulligans
cards are good in most matchups as they start off the quest (Fireplume's) while getting you closer to your quest (Town Crier).
Aggro Mulligans
Shield slam is great in most matchups as a clear for bigger minions. Town Crier can draw you a rush minion to mitigate damage while having a small body on board. Reckless Flurry and Brawl are great board clears.Midrange Mulligans
Shield slam is always a good keep as an early or midgame removal. Town Crier gets you closer to your quest.