Scuttling Sliver, Trazyn the Infinite, Runed Stalactite, and Arc Reactor

Prerequisites

• Scuttling Sliver on the battlefield
• Trazyn the Infinite on the battlefield
• Runed Stalactite on the battlefield
• Arc Reactor in the graveyard

Steps

1. Activate Trazyn using Arc Reactor's ability by tapping it, adding Activate Trazyn by paying , untapping it
2. Repeat

Results

• Infinite colorless mana
• Infinite untap of some creatures you control