If you want to get into collecting Pokmon cards, you need to know the market
This would primarily focus on ruining your opponents tactics, leaving Gengar in the Active Spot to deal the damage
If the creatures both have enough power to destroy the other one then the creatures will trade and both die
Eldlich has a ton of recursion on all of their Spell and Trap cards, allowing them to constantly recycle their resources after using their already powerful effects
This is a Cultivate that trades an extra mana for a scry triggernot as good but still very playable
A regular Emrakul reprint will obviously help bring that down somewhat, but this movie poster version, which shows the creature going to town on some innocent architecture, is sure to retain value, making it one of the biggest chase cards in the set