Druids' Repository, and Aggravated Assault

Prerequisites

• Druids' Repository on the battlefield
• Aggravated Assault on the battlefield
• You control at least five creatures that can attack this turn
• An opponent is unable to block and kill your creatures

Steps

1. Declare five creatures you control as attackers
2. Druids' Repository triggers five times, putting five charge counters on it
3. Move to your postcombat main phase
4. Activate Druids' Repository five times by removing five charge counters from it, adding
5. Activate Aggravated Assault by paying , causing you to untap all creatures you control and to get an additional combat and main phase after this one
6. Repeat

Results

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