Sword of the Paruns, and Alena, Kessig Trapper

Prerequisites

• Sword of the Paruns on the battlefield
• Alena, Kessig Trapper on the battlefield
• Alena does not have summoning sickness
• You had a creature with power 4 or greater enter the battlefield this turn
• Sword of the Paruns attached to Alena

Steps

1. Activate Alena by tapping it, adding at least
2. Activate Sword of the Paruns by paying , untapping Alena
3. Repeat

Results

• Infinite untap of creatures you control
• Infinite mana creatures you control can produce
• Infinite red mana