Desperate Ravings

The random discard is the whole trick. Drawing two for two mana would be premium on its own, so the design bolts on a clause you don't control: you refill your hand but surrender one card to chance. In most decks that is a real tax. In the decks this spell was built for, it is the point. The card is a two-cast object: the front half draws two in red and may dump something live, but the flashback redraws two more for a blue replay, and a deck leaning on its graveyard is often glad to lose a card to randomness because the discard is feeding spell counts, delve fodder, or reanimation fuel rather than stripping resources it needed. The single blue pip on the back half is doing the structural work: it pulls one card across two colors, anchoring it to a shell that supports a red front and a blue replay, and it converts a single card into four cards drawn over the course of a game. That two-spell, two-color shape is why the random discard reads as feature rather than penalty. You are spending cards you wanted in the yard anyway, and the spell rewards a deck that treats its discard pile as a resource pool rather than a loss column.