Fastbond, Zuran Orb, and Crucible of Worlds

Prerequisites

• Fastbond on the battlefield
• Zuran Orb on the battlefield
• Crucible of Worlds on the battlefield
• You control at least one land that enters the battlefield untapped

Steps

1. Sacrifice a land to activate Zuran orb gaining 2 life
2. Play that land from the graveyard with Crucible of Worlds losing 1 life to Fastbond
3. Tap the land for mana
4. Repeat

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite lifegain