dialga gx pokemon card SM-5 Ultra Prism Card: - 100/156 - Ultra Rare Holo which is known to the State of California to cause cancer. Pokemon Sun & Moon Ultra

Umbreon-EX Fates Collide / xy10-119 Card Sets Card Rule Pokmon-EX rule: When a Pokmon-EX has been Knocked Out, your opponent takes 2 Prize cards

It's possible that Hour of Devastation prices are low because the set simply isn't that powerful for Standard and most cards from the set are unlikely to find homes in tier decks, since Energy and Vehicles are still dominating Standard, and Hour of Devastation doesn't interact particularly well with either mechanic

Drop into the Discord most beginners get a deck-list reply within an hour.

Between the two of the, your elf army will just keep getting bigger until they overwhelm your opponent