Prowling Geistcatcher, Deadeye Navigator, and Phyrexian Altar

Prerequisites

• Prowling Geistcatcher on the battlefield
• Deadeye Navigator on the battlefield
• Phyrexian Altar on the battlefield
• Deadeye Navigator is paired with Prowling Geistcatcher
• You control at least three other nontoken creatures

Steps

1. Activate Phyrexian Altar three times by sacrificing three other nontoken creatures, adding
2. Prowling Geistcatcher triggers three times, exiling the sacrificed creatures from your graveyard
3. Activate Prowling Geistcatcher by paying , blinking it
4. Prowling Geistcatcher leaves the battlefield, returning all creature cards exiled with it to the battlefield
5. Prowling Geistcatcher enters the battlefield, triggering Deadeye Navigator's soulbond ability, repairing it and Prowling Geistcatcher
6. Repeat

Results

• Infinite blinking
• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers