Haru, Hidden Talent, Dryad Arbor, Rukarumel, Biologist, and Need for Speed

Prerequisites

• Haru, Hidden Talent on the battlefield
• Dryad Arbor in hand
• Rukarumel, Biologist on the battlefield
• Need for Speed on the battlefield

Steps

1. Play Dryad Arbor
2. When Dryad Arbor enters as an Ally due to Rukarumel, Haru triggers, earthbending Dryad Arbor
3. Activate Dryad Arbor by tapping it, adding
4. Activate Need for Speed by sacrificing Dryad Arbor
5. When Dryad Abor dies, Haru triggers, returning Dryad Arbor from your graveyard to the battlefield
6. When Dryad Arbor enters as an Ally due to Rukarumel, Haru triggers, earthbending Dryad Arbor
7. Resolve the Need for Speed ability
8. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite landfall triggers
• Infinite green mana