Yannik, Scavenging Sentinel, Karmic Guide, and Phyrexian Altar

Prerequisites

• Yannik, Scavenging Sentinel on the battlefield
• Karmic Guide in exile
• Phyrexian Altar on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Yannik, adding one mana of any color
2. Yannik leaves the battlefield, returning Karmic Guide from exile to the battlefield
3. Karmic Guide enters the battlefield, returning Yannik from your graveyard to the battlefield
4. Yannik enters the battlefield, exiling Karmic Guide until Yannik leaves the battlefield and distributing two +1/+1 counters among creatures you control
5. Repeat

Results

• Infinite +1/+1 counters on all other creatures you control
• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers