Creature â Human Wizard
, : Draw two cards.
, , Discard a card: Mercurial Chemister deals damage to target creature equal to the discarded card's converted mana cost.
If the discarded card has no mana symbols in its upper right corner (because itâ€™s a land card, for example), its converted mana cost is 0.
If the discarded card has in its mana cost, X is 0.
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