Aether Vial
Artifact
At the beginning of your upkeep, you may put a charge counter on this artifact.
: You may put a creature card with mana value equal to the number of charge counters on this artifact from your hand onto the battlefield.
Karl Kopinski
Double Masters 2022 (2X2)
• #298Rulings
If Aether Vial leaves the battlefield while its second ability is on the stack, use its last known number of charge counters to determine what you may put from your hand onto the battlefield.
(wotc • 2017-11-17)
If a card in a player's hand has {X} in its mana cost, X is considered to be 0.
(wotc • 2017-11-17)
Rulings
If Aether Vial leaves the battlefield while its second ability is on the stack, use its last known number of charge counters to determine what you may put from your hand onto the battlefield.
(wotc • 2017-11-17)
If a card in a player's hand has {X} in its mana cost, X is considered to be 0.
(wotc • 2017-11-17)