Ghired, Mirror of the Wilds, and Midnight Guard

Prerequisites

• Ghired, Mirror of the Wilds on the battlefield
• Midnight Guard on the battlefield
• You control at least one creature token that entered the battlefield this turn
• Midnight Guard does not have summoning sickness

Steps

1. Activate Midnight Guard by tapping it, creating a token copy of any creature token you control that entered the battlefield this turn
2. When the creature token enters the battlefield, Midnight Guard triggers, untapping itself
3. Repeat

Results

• Infinite copies of creature tokens you control that entered the battlefield this turn
• Infinite creature tokens
• Infinite ETB