The Mycotyrant, Morality Shift, and Mayael's Aria

Prerequisites

• The Mycotyrant on the battlefield
• Morality Shift in hand
• Mayael's Aria on the battlefield
• You have a number of permanent cards in your library equal to or greater than nineteen minus The Mycotyrant's power
• available

Steps

1. Cast Morality Shift by paying , exchanging your graveyard and library, causing you to descend once for each permanent card put into your graveyard this way
2. At the beginning of your end step, The Mycotyrant triggers, creating a number of 1/1 Fungus creature tokens equal to the number of times you've descended this turn
3. At the beginning of your next upkeep, Mayael's Aria triggers, causing you to put a +1/+1 counter on each creature you control, gain 10 life and win the game

Results

• Near-infinite creature tokens
• Near-infinite ETB
• Near-infinitely large The Mycotyrant
• Win the game at the beginning of your next upkeep