80x80mm card sleeves Swan (80x80mm) - 150 Pack, Thin Sleeves protected and in excellent condition. Non-standard card sleeves for 80mm

Did it have to do with the Lord of the Rings set

You can win them for placing higher, like higher quantities. In total, Shaw found 69 of the most valuable POP Series 5 packs for the Pokmon TCG (POP stands for Pokmon Organised Play), over 150 packs of the previous POP Series 4 set - available from mid-2006 to early 2007 - and a mixture of other POP boosters, along with other promotional material and what he described as notably less valuable boosters

Since you're playing a Mono-Blue deck, most, if not all of your lands will be Islands, allowing Mystic Sanctuary to almost always come in untapped

11 Pokegear 3.0 (Secret) $43.18 Don't Sleep On Item Cards Most Trainer item cards often fall off from the most expensive cards in their respective set, but certain iconic or noteworthy items buck the trend, securing solid prices through high demand

The most valuable card in the Surging Sparks set is Pikachu ex #238 at $298.45