That's because the Swelling Flash Ability it has will allow you to put Luxray PAL 71 onto your Bench as long as you have more Prize cards remaining than your opponent
Real, but rarely a high-dollar card on its own
I snagged The Abyss in pack two, which notably does not affect artifact creatures, and in the third pack I actually took Tinker over Mox Emerald because Tinker was more likely to lead to a broken start in my deck at that point, and had significantly more value later in the game
Curse of Dragon only requires one Tribute summon to get it to the field so if you need a strong monster out as quickly as possible, this can help at least and as mentioned earlier, Dragons have a lot of support to make them even stronger so Curse of Dragon is a strong Dragon monster you can send out and power up quicker than some other more powerful beatsticks
Like most Pokmon cards, the value of Magcargo depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Great Encounters)