Éphémère
Vous piochez X cartes et vous perdez X points de vie, X étant la valeur de mana d'un commandant que vous possédez sur le champ de bataille ou dans la zone de commandement.
If your commander is under the control of another player as Stinging Study resolves, it is still on the battlefield and will still be used to determine the value of X.
If you own multiple commanders on the battlefield and/or in the command zone, you choose one of them as Stinging Study resolves to determine the value of X.