Wall of Blood + Vizkopa Guildmage + Swords to Plowshares

Wall of Blood
Vizkopa Guildmage
Swords to Plowshares

Requires
All permanents on the battlefield. Swords to Plowshares in hand. Greater life total than each opponent. 1wwb available.
Steps
  1. Activate Vizkopa Guildmage's second ability
  2. Activate Wall of Blood's ability until you are at 1 life
  3. Cast Swords to Plowshares, targeting Wall of Blood
  4. You gain life equal to Wall of Blood's power, and each opponent loses that much life
Results
Infinite lifeloss. Near-infinite lifegain.