Not only does it tutor exactly what you need, but you also get to give an opponent a card too, that you can mill before they get a chance to draw it
Dredge The card, not the mechanic
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Damage dealt to cards doesnt wear off at the end of the turn, so every exhaustion will likely bring any Glimmers involved closer to the end of their tenure on the board
Of course, the further rulings cleared everything up, and the one who takes the decision surprise -- its the player who controls the Floral Spuzzem
however, the chosen recipient must be able to legally be enchanted by the Aura, so a player or permanent with protection from one of the Aura's qualities can't be chosen this way