Lurking Roper, Presence of Gond, and Prosperous Innkeeper

Prerequisites

• Lurking Roper on the battlefield
• Presence of Gond on the battlefield
• Prosperous Innkeeper on the battlefield
• Presence of Gond attached to Lurking Roper
• Lurking Roper does not have summoning sickness

Steps

1. Activate Lurking Roper by tapping it, creating a 1/1 Elf Warrior creature token
2. When the Elf Warrior enters the battlefield, Prosperous Innkeeper's second ability triggers, causing you to gain 1 life
3. Lurking Roper triggers, untapping itself
4. Repeat

Results

• Infinite creature tokens
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers