This Reshiram is incredibly hard to find in good condition, with damaged copies starting at around $33
A seventh variety, the Pretend Team Skull Pikachu (still classified as a Poncho promo despite the design no longer being Pikachu literally wearing a poncho), was released during the Sun & Moon era as the final Full Art Pretend promo
We need creatures in our brew to trigger my self-mill, enter this duo
That means (1) the ability won't trigger at all unless the defending player controls more lands than you, and (2) the ability will do nothing if you control at least as many lands as the defending player by the time it resolves
As an Artifact, its nice to recur with Edgar, Master Machinist
Rather than inflating the value of the card like TCG-Mid, these metrics often make the card look cheaper than it will be once it is relisted