Missy, Altar of Dementia, and Coral Trickster

Prerequisites

• Missy on the battlefield
• Altar of Dementia on the battlefield
• Coral Trickster on the battlefield
• You control a permanent that can tap to produce at least

Steps

1. Activate Altar of Dementia by sacrificing Coral Trickster
2. When Coral Trickster dies, Missy's first ability triggers, returning Coral Trickster from your graveyard to the battlefield face down as a 2/2 Cyberman artifact creature
3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Coral Trickster's power
4. Activate a mana-producing permanent by tapping it, adding at least
5. Activate Coral Trickster's morph ability by paying , turning it face up
6. Coral Trickster triggers, untapping target permanent
7. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill