Rhet-Tomb Mystic, New Perspectives, and Greater Mossdog

Prerequisites

• Rhet-Tomb Mystic on the battlefield
• New Perspectives on the battlefield
• Greater Mossdog in hand
• You have at least seven cards in hand

Steps

1. Activate Greater Mossdog's cycling ability by paying and discarding it, causing you to mill a number of cards and return Greater Mossdog from your graveyard to your hand due to its dredge ability
2. Repeat

Results

• Infinite self-mill