Prerequisites
- Hollowhenge Overlord on the battlefield
- Parallel Lives on the battlefield
- Bard, King of Dale on the battlefield
Steps
- At the beginning of your upkeep, Hollowhenge Overlord triggers, creating four 2/2 Wolf creature tokens for each Wolf and/or Werewolf you control due to Parallel Lives and Bard
- Repeat step 1 during each of your upkeeps
- You'll create exponentially more Wolves each time assuming the Wolf tokens survive
Results
Required Cards 3

Hollowhenge Overlord
Creature — Wolf

Parallel Lives
Enchantment

Bard, King of Dale
Legendary Creature — Human Noble Archer