Missy, Blasting Station, and Horde Ambusher

Prerequisites

• Missy on the battlefield
• Blasting Station on the battlefield
• Horde Ambusher on the battlefield
• You have at least one red card in hand

Steps

1. Activate Blasting Station by tapping it and sacrificing Horde Ambusher
2. When Horde Ambusher dies, Missy's first ability triggers, returning Horde Ambusher from your graveyard to the battlefield face down as a 2/2 Cyberman artifact creature
3. When Horde Ambusher enters the battlefield, Blasting Station triggers, untapping Blasting Station
4. Resolve the Blasting Station ability from step 1, dealing 1 damage to any target
5. Activate Horde Ambusher's morph ability by revealing a red card from your hand, turning it face up
6. Repeat

Results

• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers