Activate Lord of the Forsaken's second ability by paying 1 life, adding {C} that can only be used to cast spells from your graveyard.
Repeat step 1 until you have one life.
Cast Ribbons from your graveyard for its aftermath cost by paying {B}{B} and by paying all available {C}.
Resolve Riboons, causing each opponent to lose life equal to the colorless mana paid this way.
Each opponent loses the game due to having zero or less life.

Each opponent loses the game

Near-infinite lifeloss

Lord of the Forsaken

Cut // Ribbons

Cast a copy of Channel by paying {G}{G}.
Activate the ability granted by Channel by paying 1 life, adding {C}.
Repeat step 2 as desired.
Cast Ribbons from your graveyard by paying {B}{B} and all remaining available mana, causing each opponent to lose a significant amount of life.

Combos with "Cut // Ribbons"