Mana Crypt
Artifact
At the beginning of your upkeep, flip a coin. If you lose the flip, this artifact deals 3 damage to you.
: Add 
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Matt Stewart
Rulings
No player may choose to take actions between determining the result of the flip and damage being dealt if you lost the flip.
(wotc • 2020-08-07)
Rulings
No player may choose to take actions between determining the result of the flip and damage being dealt if you lost the flip.
(wotc • 2020-08-07)