If you look at a typical Infect deck list all of its creatures are Phyrexians thanks to an errata a while ago, so The Seedcore works as a dual land (this is could also help open up the possibility of more three-color infect builds rather than the two-color builds which are most popular today), and almost all the most popular Infect creatures are 1/1s, which makes The Seedcores corrupted pump ability especially impactful
Players who dont want to depend on Moltres EXs random Energy generation can instead rely on Magby for a more consistent setup
Then, I created a new layer and used a clipping mask to fill in the shading and highlights for the inner boxes
They also have both exclusive Attributes (DIVINE) and Types (Divine-Beast or a completely unique type), and are supported by cards which mention the exclusive attribute or the exclusive type
A full Extra Deck lead your opponent to expect a common meta deck, allowing you to catch them by surprise
When we put demons into the set we didn't go back and revisit why we excluded Tombstalker