Ancient Tomb and City of Traitors: The Sol lands are very powerful, dont get me wrong
For example, say you've cast two spells this turn, and with Murmuration's last ability on the stack, you cast a Blizzard Strix (a Bird creature spell with flash that may have been chosen for this example due to being an adorable owl)
The reason for its value can be attributed to not only its rarity but its unique card design that features this fearsome Pokemon in a kinder light, combined with its powerful attack that makes it possible for it to hit for incredible damage with potentially no energy attached
You can enjoy quick and exciting battles with your cards
1 2 Ecai 2016
I refer to this as "good teaser text." Before each set's release, I do a teaser on my blog, which I share on other social media, where I give hints about cards in the upcoming set