Calix, Guided by Fate, Three Blind Mice, and Doubling Season

Prerequisites

• Calix, Guided by Fate on the battlefield
• Three Blind Mice on the battlefield
• Doubling Season on the battlefield
• Calix does not have summoning sickness and cannot be blocked by an opponent

Steps

1. Deal combat damage to an opponent using Calix
2. Calix's second ability triggers, creating two token copies of Three Blind Mice
3. The Three Blind Mice tokens enter the battlefield with two lore counters on them due to Doubling Season, triggering their first and second chapter abilities, as well as Calix's first ability twice
4. Resolve both Calix triggers, putting two +1/+1 counters on a creature you control
5. Resolve the first Three Blind Mice triggers, creating four 1/1 Mouse creature tokens
6. Resolve the next Three Blind Mice trigger, creating two token copies of a Three Blind Mice token
7. Repeat from step 3
8. Once you have infinite Three Blind Mice triggers, you may use them to copy any token(s) you control

Results

• Infinite +1/+1 counters
• Infinite copies of tokens you control
• Infinite creature tokens
• Infinite ETB
• Infinite Three Blind Mice tokens