Kiora, Master of the Depths: It can enter at 5 loyalty and that is good because, unlike the Theros block Kiora, it cannot defend itself
Have you heard the news
Once per turn, if your monster would be destroyed by battle, you can send 1 "Therion" card or 1 "Endless Engine Argyro System" from your Deck to the GY instead
As a rule, the top 10 most expensive cards early on in a sets life will be the rarest Pokmon cards (in Ascended Heroes case this is Mega Hyper Rares) and the most popular Special Illustration Rares
BT11-067 U Digimon Lv.5 Gigadramon Color Black Cost 7 DP 7000 Digivolve Cost 1 Black 3 from Lv.4 Form Ultimate Attribute Virus Type Cyborg Card Text 1 [Effect] Jamming (This Digimon can't be deleted in battles against Security Digimon.) Card Text 2 [Inherited Effect] Reboot (Unsuspend this Digimon during your opponent's unsuspend phase.) BT11-068 R Digimon Lv.5 Mamemon Color Black Cost 7 DP 6000 Digivolve Cost 1 BlackGreen 3 from Lv.4 Form Ultimate Attribute Data Type Mutant Card Text 1 [Effect] [On Play][When Digivolving] Reveal the top 5 cards of your deck
One honorary mention goes out to Elder Entity N'tss, which has niche usage by turning the loss of an Extra Deck card into an upside by destroying one card of your choice