Sudden Insight

The clever wrinkle here is that it doesn't count cards in your graveyard: it counts distinct mana values, which turns a well-diversified curve into a payoff rather than a liability. Most graveyard-refill draw spells reward raw quantity, so they scale with self-mill and cheap chaff. This one asks for spread instead. A yard stuffed with four copies of the same one-drop draws a single card; a yard holding a one, a two, a three, and a five draws four. The design nudges you toward a curve you were already going to play, then pays out at a moment (instant speed, late enough that six mana is trivial) when your graveyard has naturally filled with the varied detritus of a real game. The countable ceiling is genuinely high, since the numbers keep climbing as the game goes long and every new mana value adds a card, but the floor early is deliberately thin: cast it on turn six with two spells in the bin and you have overpaid for a Divination. It is a payoff card that rewards patience and a broad curve rather than a fast graveyard, and the distinction between counting values and counting cards is the whole reason it plays differently from the pile of "draw for each" effects that came before it.