Arcane Adaptation + Benthicore + Elemental Mastery

UR identity

Commander legal

The 3 combo pieces

• Arcane Adaptation
• Benthicore
• Elemental Mastery

What must be in place

Elemental Mastery attached to Benthicore.
"Merfolk" chosen with Arcane Adaptation.
Benthicore does not have summoning sickness.

How to execute it

1. Activate Benthicore by tapping it, creating five 1/1 Elemental tokens with haste that are also Merfolks due to Arcane Adaptation.
2. Activate Benthicore by tapping two Elemental tokens, untapping Benthicore.
3. Repeat.

What the combo produces

• Infinite creature tokens with haste
• Infinite ETB