Mulligans
General Mulligans
Try to just control the board early game and shuffle Healbots mid/late game. Consider choosing to add Augmented Elekk for more shuffle synergy.
Try to shuffle lots of 1/1 ‘bots into your deck late game. Use the Gallery/Bwonsamdi to summon draw them, and use Embrace the Shadow + Circle of Healing to kill them and do lots of face damage.