Sanity Grinding
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 their library into their graveyard. Then put the cards you revealed this way on the bottom of your library in any order.
イラスト：
Eventide#29レア英語適正
裁定
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.
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.
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 their library into their graveyard. Then you reorder your entire library as you choose.