The selling price depends on how well the card has been taken care of
In this context, Urza is basically just an Inspiring Statuary that can give you blue mana for any purpose and float extra mana, which makes it considerably easier to go off, though an extra mana to get started and not itself being an artifact are both substantial drawbacks
All that said, if youre playing in a tournament, it would be wise to check with the head judge before playing any of these cards
Some of that is just good fortune in how all these effects are worded, but Id say its more that discarding is an inherently effective way to interface with Magic s core mechanics
In the UK, players can obtain this special Eevee promo as a gift with purchase from the Pokmon Center online and select retailers for purchases over 30, available until March 27 or while supplies last, as explained in TPCis blog post