Nodes of Power
No Event supports
Garruk Cursed Hunstman
Lich's Mastery prevented NO damage at all.
No Prevent Damage evergreen was added to the PW when it came into play.
Damage was taken from: Discarding a card via Citadel, from Opponent PW's ability (Lilliana UbD using 'Fill the Graves'), and from casting Grim Tutor. - None of these should have caused damage once Lich's Mastery was out.
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 😊