ash greninja pokemon card pack Pokémon Chaos Rising 3-Pack Blister [ME04] When a Pokémon Ash-Greninja EX Box - XY

As you pointed out, the difference between Pokmon EX and Pokmon GX is that the former ones are always Basic whereas the latter ones are always the stage they are supposed to be [1] (except for Tag Team GX cards which are also always Basic)

The ability to play additional lands per turn is massive and this card brings back serious memories of some of the most popular Theros cards during the last phase of the original Theros standard metagame

Umbreon Gold Star The Umbreon Gold Star was released in 2005 and is relatively new compared to other rare cards

#5 Beast Whisperer Commander: Kaldheim, Rare Despite being four mana, Beast Whisperer from Guilds of Ravnica comes with a simple ability that turns those creature cards you cast into card draw

In my opinion it can be assumed pretty much for sure that the blank spot was where the Ivy promo Pikachu was originally printed on the 1st Edition uncommons sheet (it is known to appear in the uncommons slot)

But it can be a little clunky, so let me briefly explain it so you can properly execute it when the time comes: Have Worldgorger Dragon in your graveyard