Stream of Thought

Mill in blue has always sat in an awkward corner: too slow to race combo, too passive to close a game before it decks itself out. This spell answers the second half of that problem directly. The four-card mill is the aggressive line, but the shuffle clause is what makes it repeatable: instead of scraping toward zero and running out of gas, the caster refuels their own library with up to four cards from the graveyard, turning a mill deck's biggest structural liability into a maintenance step. That pairing of an attacking effect with a self-preserving one is the whole design, and replicate is what scales it. Pay the cost as many times as your mana allows and each copy resolves as its own mill-and-shuffle, so a topped-off mana curve translates directly into stacked instances against one opponent (or the flexibility to reshape several graveyards and libraries at once, since copies may choose new targets). The result is a card that rewards flooding without punishing it: excess lands late in the game become additional mill and additional recursion rather than dead draws. It is a rare mill card built to grind rather than to burst, and the shuffle-back is the load-bearing piece, quietly recycling your best cards while chipping at someone else's deck.