Loporrit Scout, Sinking Feeling, Ashnod's Altar, and Nest of Scarabs

Prerequisites

• Loporrit Scout on the battlefield
• Sinking Feeling on the battlefield
• Ashnod's Altar on the battlefield
• Nest of Scarabs on the battlefield
• available

Steps

1. Acitvate Loporrit Scout by paying and putting a -1/-1 counter on it
2. Nest of Scarabs triggers, creating a creature token
3. When the creature token enters the battlefield, Loporrit Scout triggers, giving Loporrit Scout +1/+1 until end of turn
4. Resolve the Loporrit Scout ability from step 1, untapping it
5. Activate Ashnod's Altar by sacrificing the creature token, adding
6. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite creature tokens