MTG Salvation

Ok my question is this my commander is gonna be. Xantcha sleeper agent give her to target opponent attacks each combat if able. Pay 3 mana lose 2 life draw a card any player can activate it. And the other card is bitter fued. Chose 2 players player A player B if player a is the source of damage to player b then the damage is double. My question if player A had my commander and player B activated the ability player A lose 2 lufe player b draw card. Would player B count as the source of damage to trigger bitter fuad or no?.

No. This is because loss of life is not damage and is never affected by effects that apply to damage.

The card you are looking for in that case is Wound Reflection

This question has been answered so I'm going to lock this. In the future, please direct all rules questions to the Magic Rulings forum.