Sanity Grinding

Sorcery    (CMC:3)

Chroma — Reveal the top ten cards of your library. For each blue mana symbol in the mana costs of the revealed cards, target opponent puts the top card of his or her library into his or her graveyard. Then put the cards you revealed this way on the bottom of your library in any order.

29 EVE • ENLars Grant-West

™ & © 1993—2008 Wizards of the Coast

Legal in: Modern,Lorwyn-Shadowmoor Block,Legacy,Vintage,Freeform,Prismatic,Tribal Wars Legacy,Classic,Singleton 100,Commander

Oracle Text (click to copy):

Sanity Grinding {U}{U}{U} Sorcery Chroma — Reveal the top ten cards of your library. For each blue mana symbol in the mana costs of the revealed cards, target opponent puts the top card of his or her library into his or her graveyard. Then put the cards you revealed this way on the bottom of your library in any order.

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View this MTG card on Gatherer

8/1/2008
Chroma abilities check only mana costs, which are found in a card's upper right corner. They don't count mana symbols that appear in a card's text box.
8/1/2008
Chroma abilities count hybrid mana symbols of the appropriate color. For example, a card with mana cost  has two red mana symbols in its mana cost.
8/1/2008
If there are fewer than ten cards in your library, reveal them all. For each blue mana symbol in those cards' mana costs, the targeted opponent puts the top card of his or her library into his or her graveyard. Then you reorder your entire library as you choose.

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