Mask of Griselbrand
Legendary Artifact — Equipment
Equipped creature has flying and lifelink.
Whenever equipped creature dies, you may pay X life, where X is its power. If you do, draw X cards.
Equip 
The legacy of evil lives on.
Jason Felix
Rulings
Use the equipped creature's power as it last existed on the battlefield to determine the value of X.
(wotc • 2021-09-24)
You must pay exactly X life or nothing. You can't pay less life to draw fewer cards.
(wotc • 2021-09-24)
Rulings
Use the equipped creature's power as it last existed on the battlefield to determine the value of X.
(wotc • 2021-09-24)
You must pay exactly X life or nothing. You can't pay less life to draw fewer cards.
(wotc • 2021-09-24)