Gilder Bairn, Lost Jitte, and Song of Freyalise

Prerequisites

• Gilder Bairn on the battlefield
• Lost Jitte on the battlefield
• Song of Freyalise on the battlefield

Steps

1. Activate Song of Freyalise by tapping Gilder Bairn, producing its effect
2. Activate Gilder Bairn by paying and untapping it, doubling each counter on Lost Jitte
3. Activate Lost Jitte two times by removing three charge counters from it, untapping two lands
4. Activate those lands by tapping them, adding
5. Repeat from step 2
6. Once you have infinite counters on Lost Jitte, you may instead double the counters on any other permanents

Results

• Infinite proliferate for permanents
• Infinite colored mana
• Infinite +1/+1 counters on creatures you control