The Gitrog Monster, Skirge Familiar, Worm Harvest, Dakmor Salvage, Vigor, and Dread

Prerequisites

• The Gitrog Monster and Skirge Familiar on the battlefield
• Dakmor Salvage and Worm Harvest in hand or in graveyard
• Vigor and Dread in hand or in library

Steps

1. Discard Dakmor Salvage to Skirge Familiar to add
2. In response to the Gitrog trigger, dredge Dakmor back into your hand
3. Repeat steps 1 and 2 until you've milled through your library, either allowing the extra draw triggers from Gitrog to resolve or discarding in response
4. Discard Dread and Vigor to Skirge Familiar to put them back in your library before decking yourself
5. Discard any extra lands in your hand to Skirge Familiar
6. Let the rest of your draw triggers resolve, repeating step 4 as much as necessary
7. Cast Worm Harvest with all of the black mana you created
8. Repeat steps 1-4 to create infinite mana
9. Cast Worm Harvest from your graveyard, discarding Dakmor Salvage, and dredging it back up
10. Repeat for infinite worm tokens

Results

• Infinite self-mill
• Infinite ETB
• Infinite black mana