Diamond Valley, Serra Avatar, and Sanguine Bond

Prerequisites

• Diamond Valley on the battlefield
• Serra Avatar on the battlefield
• Sanguine Bond on the battlefield
• Your life total is higher than or equal to an opponent's

Steps

1. Activate Diamond Valley by tapping it and sacrificing Serra Avatar, causing you to gain life equal to Serra Avatar's power
2. Sanguine Bond triggers, causing target opponent whose lifetotal is less than or equal to Serra Avatar's power to lose life equal to the life you gained
3. The opponent loses the game due to having zero or less life

Results

• Near-infinite lifegain
• Near-infinite lifeloss for target opponent
• Target opponent loses the game