March of Wretched Sorrow [Investigating]

Exiled a Blood on the Snow from my hand - March of Wretched Sorrow (also in hand) triggered.
Next turn Exiled a Dying to Serve from my hand - March of Wretched Sorrow did not trigger.

Perhaps because it only had 2 mana left to fill on that second turn?

Hello @Janosik,
Thank you for all the information provided, this issue will be investigated!
If you have any additional information that you consider relevant, please don’t hesitate to send me :blush:
Rebeca.