Umbris, Fear Manifest, Ruthless Technomancer, and Auton Soldier

Prerequisites

• Umbris, Fear Manifest on the battlefield
• Ruthless Technomancer in hand
• Auton Soldier on the battlefield
• available

Steps

1. Cast Ruthless Technomancer by paying
2. Ruthless Technomancer enters the battlefield, causing you to sacrifice Umbris and create at least seven Treasure tokens
3. Activate six Treasure tokens by tapping and sacrificing them, adding
4. Activate Ruthless Technomancer by paying and sacrifcing Auton Soldier, returning Umbris from your graveyard to the battlefield
5. Umbris enters the battlefield, causing target opponent to exile cards from the top of your library until they exile a land card
6. Activate Ruthless Technomancer by paying and sacrifcing a Treasure token, returning Auton Soldier from your graveyard to the battlefield as a copy of Ruthless Technomancer
7. Auton Soldier enters the battlefield, causing you to sacrifice Umbris and create at least seven Treasure tokens
8. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite Treasure tokens
• Exile each opponent's library