For materials, all it needs is any two Dark Monsters, and with how powerful they are, it's not uncommon to be able to use the opponent's field exclusively to make it
This is by far up to par with the A6 size popularity since the size is close to the Golden Ratio, hence making your cards appear more pleasing to the eye for their balanced appearance
Three different versions increasing in powerlevel, not sure which would be the most appropriate, as the effect can be strong (free discard + explore a land = rinse and repeat!)
#1 - Mew ex (Rarity: Special Illustration Rare) Undoubtedly the crown jewel of this set, Mew ex takes the top spot
The Summer Nexus is a holy grove in Setessa where the starfields of Nyx glitter in the shadows
Graded Population Report: Dragonite V #74 Visualize the distrbution of grades in the chart