Mulligans
General Mulligans
always keep tusk and arkonite. can keep more proactive cards if vs more aggresive decks, lean more into draw vs control.
Deathrattle shell gives survivability into Aranna fatigue OTK.
Combo takes a setup turn with dorian where you shuffle back the octosari with envoy of prosperity then draw to get a 1/1 octo. Do this twice in one turn using any of the draw in the deck (ancient of yore can work at end of turn too).
Then you go aranna + the two 1/1 octos and kill them off with nightshade tea.
136 damage combo on an empty board with no cards in deck, against anything not stacking armor it will always be enough.
With the armor gain from arkonite and felhunter you can often just play the octosari and kill it with ceaseless milling yourself for 8 before playing the minis the next turn if you find yourself vs the regular dh with 200+ armor.
Weaker vs aggro than control but can use the envoys and teas proactively to stay alive and just grind them out with normal armor dh stuff.
Combo can clog hand a little but being able to just play exodar and launching ships early for tempo makes a big difference to keeping up with other decks.