Gilder Bairn, Pentad Prism, and Paradise Mantle

Prerequisites

• Gilder Bairn on the battlefield
• Pentad Prism on the battlefield
• Paradise Mantle on the battlefield

Steps

1. Activate Gilder Bairn using its ability from Paradise Mantle by tapping it, adding one mana
2. Activate Gilder Bairn by paying and untapping it, doubling each counter on Pentad Prism
3. Activate Pentad Prism as many times as necessary by removing counters from it, adding at least two mana
4. Repeat from step 2
5. Once you have infinite counters on Pentad Prism, you may instead double the counters on any other permanents

Results

• Infinite proliferate for permanents
• Infinite colored mana