Rukarumel, Biologist, Famished Paladin, Cryptolith Rite, and Judge of Currents

Prerequisites

• Rukarumel, Biologist on the battlefield
• Famished Paladin on the battlefield
• Cryptolith Rite on the battlefield
• Judge of Currents on the battlefield
• Famished Paladin does not have summoning sickness
• "Merfolk" chosen with Rukarumel

Steps

1. Activate Famished Paladin by tapping it, adding one mana of any color
2. Judge of Currents triggers, causing you to gain 1 life
3. Famished Paladin triggers, untapping itself
4. Repeat

Results

• Infinite colored mana
• Infinite lifegain
• Infinite lifegain triggers