Captain Kathryn Janeway + Putrid Goblin + Sling-Gang Lieutenant

BG identity

Commander legal

The 3 combo pieces

What must be in place

The top card of your library is a nonland card.

How to execute it

  1. Activate Sling-Gang Lieutenant by sacrificing Putrid Goblin
  2. When Putrid Goblin dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. When Putrid Goblin enters, Captain Kathryn Janeway triggers, revealing the top card of your library, putting a +1/+1 counter on Putrid Goblin and then putting the card back on top of your library.
  4. Resolve the Sling-Gang Lieutenant ability.
  5. Repeat.

What the combo produces