Anzrag, the Quake-Mole, and Anara, Wolvid Familiar

Prerequisites

• Anzrag, the Quake-Mole on the battlefield
• Anara, Wolvid Familiar in hand
• Anzrag does not have summoning sickness
• An opponent controls a creature
• available

Steps

1. Activate Anzrag by paying , causing opponents to block Anzrag if able this turn
2. Declare Anzrag as an attacker, attacking an opponent who controls a creature
3. The opponent is forced to block Anzrag, triggering Anzrag, untapping all creatures you control and causing you to get an additional combat phase after this one
4. Any combat damage dealt to Anzrag will not kill it due to Anara giving it indestructible
5. Repeat from step 3 each combat phase

Results

• Infinite combat phases
• Infinite untap of creatures you control
• Infinite mana creatures you control can produce