And really, to take full advantage, you will want a lot of artifacts, because you just want to be able to send in the 4/4 until your opponent kills it
Generally, the Pokemon cards are broken into three stages: (There are additional stages, but thats another lesson for another day) Basic Pokemon (In our example below: Charmander) Stage 1 Pokemon (In our example below: Charmeleon) Stage 2 Pokemon (In our example below: Charizard) Stage 1 and Stage 2 cards also referred to as Evolution cards
This has the X spell problem of none of the modes are individually appealing
Born in 1988 in Kochi Prefecture
Also, that makes it an additional cost, not an alternative casting cost (in fact it states such explicitly right on the card), so Shared Discovery doesn't actually cost just one , it costs more , in the form of needing creatures already in play
Like you said, it is not different art, but the fact it is a different print (yet even that is something of a grey area) makes it seem worthwhile to pick up