When Krosan Sea enters the battlefield, sacrifice it unless you pay .
: Add to your mana pool. Return Krosan Sea to its owner's hand.
, , Sacrifice Krosan Sea: Target player draws two cards, then discards two cards.
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: Add 
to your mana pool. Return Krosan Sea to its owner's hand., , Sacrifice Krosan Sea: Target player draws two cards, then discards two cards.
