Unfortunately, this sword doesnt pack the same punch as something like Sword of Feast and Famine, but its sure to find its way into some Voltron or equipment decks
A strong case can be made that fetchlands are the most powerful cards in Modern, especially if we set aside a few possible exceptions like Mox Opal or maybe Lightning Bolt
(Of which, I think the City Styles felt the best to me in the past year
The likes of Shadowborn Apostle and the recent Elesh Norn, Grand Cenobite promo spring to mind

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That looks cheap against Prismatic's Umbreon ex #161, which is around $1,250 and $4,500, respectively