Vizkopa Guildmage's second ability by paying ({1} magic symbol) ({W} magic symbol) ({B} magic symbol) , causing each opponent to lose life whenever you gain life this turn.
Activate
Lord of the Forsaken by paying 1 life.
Repeat step 2 until you have 1 life.
Activate
Children of Korils by sacrificing it, causing you to gain life equal to the amount of life you've lost this turn.
Vizkopa Guildmage triggers, causing each opponent to lose life equal to the amount of life you gained.
Results
Near-infinite lifeloss.
Near-infinite colorless mana that can only be spent to cast spells from your graveyard.