Mercurial Chemister
Creature — Human Wizard
, 
: Draw two cards.
, , Discard a card: This creature deals damage to target creature equal to the discarded card's mana value.
What some see as "distracted" is really "fathoming the unfathomable."
Wesley Burt
Commander 2020 (C20)
• #221Rulings
If the discarded card has no mana symbols in its upper right corner (because it's a land card, for example), its mana value is 0.
(wotc • 2012-10-01)
If the discarded card has {X} in its mana cost, X is 0.
(wotc • 2012-10-01)
Rulings
If the discarded card has no mana symbols in its upper right corner (because it's a land card, for example), its mana value is 0.
(wotc • 2012-10-01)
If the discarded card has {X} in its mana cost, X is 0.
(wotc • 2012-10-01)