Kenrith, the Returned King, Crystalline Crawler, Biomancer's Familiar, and Winding Constrictor

Prerequisites

• Kenrith, the Returned King on the battlefield
• Crystalline Crawler on the battlefield
• Biomancer's Familiar on the battlefield
• Winding Constrictor on the battlefield
• available

Steps

1. Activate Kenrith by paying , putting two +1/+1 counters on Crystalline Crawler
2. Activate Crystalline Crawler by removing a +1/+1 counter from it, adding
3. Repeat

Results

• Infinite colored mana
• Infinite lifegain triggers
• Infinite lifegain
• Infinite +1/+1 counters
• Infinite card draw for any number of players
• Put all creature cards from all graveyards onto the battlefield under your control
• Infinite draw triggers for any number of opponents