Greater Mossdog + The Wise Mothman Combos

Combo 1 with Benthic Biomancer

Steps

1. Attempt to draw card, instead choosing to mill 3 cards and return Greater Mossdog from your graveyard to your hand.
2. If you milled a nonland card, The Wise Mothman triggers, putting a +1/+1 counter on Benthic Biomancer.
3. Benthic Biomancer triggers, causing you to draw a card and discard Greater Mossdog.
4. Repeat.