Selvala, Heart of the Wilds, and Umbral Mantle

Prerequisites

• Selvala, Heart of the Wilds on the battlefield
• Umbral Mantle on the battlefield
• Umbral Mantle attached to Selvala
• Selvala does not have summoning sickness
• You control a creature with power five or greater
• available

Steps

1. Activate Selvala by paying and tapping it, adding at least
2. Activate Selvala by paying and untapping it, giving itself +2/+2 until end of turn
3. Repeat

Results

• Infinite colored mana
• Infinitely large Selvala until end of turn