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But the real power comes from its activated ability: For 4 mana and a tap, you can sacrifice it to tutor any artifact into your hand

Returning to Sower being a creature you can get repeat uses through bounce spells, cast it at instant speed with things like Aether Vial and easily protect it with effects like Kira or Spellskite

Repeated instances of paying the mutate cost will get expensive (especially with the double blue requirement), but fortunately youre in a color that has some bounce capability

This is also in a low-stock, low-price situation and with how good this card is and how many times Ive called it a buy in the past, I think anything under $15 is cheating