Four mana and two forages to get a 4/3 and a 3/3 is a good deal, a strong way to catch up or get ahead with your board presence
A signed Black Lotus would fetch a very high price
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Four things drive almost every valuation you will see: Rarity and print run, the starting point for any premium Condition and grading, which can multiply or shrink a price Edition and print variations, where small differences mean big gaps Errors and misprints, the quirks that occasionally create value Once you know what to look for, the final step is knowing where to confirm a cards current market price
Oko being a rarer pull also makes sense since you can open a borderless treatment of the card in boosters, giving more variety in the cards you can open
Bladetusk Boar 3 Printings and their Prices Track Bladetusk Boar Prices Free collection tools for Magic: the Gathering