Xenograft, and Turntimber Ranger

Prerequisites

• Xenograft on the battlefield
• Turntimber Ranger in hand
• "Ally" chosen with Xenograft
• available

Steps

1. Cast Turntimber Ranger by paying
2. Turntimber Ranger enters the battlefield, creating a 2/2 Wolf creature token and putting a +1/+1 counter on Turntimber Ranger
3. 2/2 Wolf creature token enters the battlefield triggering Turntimber Ranger, creating a 2/2 Wolf creature token and putting a +1/+1 counter on Turntimber Ranger
4. Repeat from step 2

Results

• Infinite creature tokens
• Infinite ETB
• Infinitely large Turntimber Ranger