Teysa, Orzhov Scion, Painter's Servant, and Phyrexian Altar

Prerequisites

• Teysa, Orzhov Scion on the battlefield
• Painter's Servant on the battlefield
• Phyrexian Altar on the battlefield
• "Black" chosen with Painter's Servant
• You control at least one additional creature

Steps

1. Activate Phyrexian Altar by sacrificing any other creature, adding one mana of any color
2. Because the creature was black due to Painter's Servant, Teysa triggers, creating a 1/1 Spirit creature token
3. Repeat

Results

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