Yes, I know about Archeops, but you need two Archeops for best results, while you only need one Gardevoir ex, and post-rotation, Archeops loses a lot of its best Energy
If you play this during your turn, it will always be at least two, but usually, decks with this card are designed to abuse it, so it can sometimes give a boost of three, four, five, or more
Dont worry about the condition, forget that frayed corner
Not only that, it has strong cross-appeal: fans of Legendaries, gold cards, and Mega Evolutions all converge on this one, which is why copies in clean condition are likely to remain some of the most hotly contested listings on the secondary market