Mulligans
General Mulligans
Aim for minions in your opening hand to contest the board. Don't worry, you'll get them back later through resurrect effects!
Aggro Mulligans
Along with minions to contest the board, healing and semi-board clears are also a good keep.
Midrange Mulligans
Find your minions and minion-kill cards to contest the board and outlast your opponent before killing them off with burst damage.