Umbral Mantle, and Elvish Aberration

Prerequisites

• Umbral Mantle on the battlefield
• Elvish Aberration on the battlefield
• undefined

Steps

1. Activate Elvish Aberration by tapping it, adding
2. Activate Elvish Aberration by paying and untapping it, giving it +2/+2 until end of turn
3. Repeat

Results

• Infinitely powerful creature until end of turn