Missy, Ashnod's Altar, and Coral Trickster

Prerequisites

• Missy on the battlefield
• Ashnod's Altar on the battlefield
• Coral Trickster on the battlefield
• You control a permanent that can tap to produce at least

Steps

1. Activate Ashnod's Altar by sacrificing Coral Trickster, adding
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. Activate a mana-producing permanent by tapping it, adding at least
4. Activate Coral Trickster's morph ability by paying , turning it face up
5. Coral Trickster triggers, untapping target permanent
6. Repeat

Results

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