Professor Zei, Anthropologist

Rummage, not loot: this is the discard-then-draw filter, the version that fills the graveyard before it draws rather than after. That ordering is load-bearing here, because the second ability is built to catch what the first one buries. Every instant or sorcery pitched to the draw is not spent but staged, and the sacrifice mode pays a single mana to reclaim it. The rummage stops being raw hand-smoothing and becomes deliberate binning: pitch the burn spell or counterspell you cannot cast this turn, dig for what the moment demands, then buy the pitched card back once the tap is spent and the body has done its work. The recursion is a one-shot tied to the creature staying on the battlefield, and it is walled off to your own turn, so it will not flash back a reactive answer during an opponent's swing. That timing restriction is the whole discipline: the card is a setup piece for a proactive plan, not a grinding value engine that recurs forever. The 0/3 frame reads as an afterthought but suits the job precisely. It shrugs off incidental burn and clogs an early attack while filtering, durable enough to tap on schedule yet cheap enough to sacrifice without a second thought. Cast on either color, it slots into the seam where red's willingness to discard meets blue's appetite for card selection.