Blast of Genius
Oracle Text
Choose any target. Draw three cards, then discard a card. Blast of Genius deals damage equal to the discarded card's converted mana cost to that permanent or player.
Card Rulings
4/15/2013 You choose the target as part of casting the spell. If that permanent or player is an illegal target when Blast of Genius tries to resolve, it won’t resolve and none of its effects will happen. You won’t draw or discard any cards.
4/15/2013 If you discard a split card, its converted mana cost is determined by the combined mana costs of its two halves.
4/15/2013 If you discard a card with in its mana cost, the value of X is zero.
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