The Secret Rare foil is somewhat of a detriment to the art, as the foil makes it difficult to see the Kashtira Arise-Heart and the buildings through the black and red
About which packs to buy, actually it does not matter that much since the probability of getting what you want is low, but, to maximize it, Id recommend getting Amonkhet for Hazoret the Fervent, Glorybringer, Ahn-Crop Crasher, Magma Spray and Sunscorched Desert
Thran Dynamo: #1
Link Monsters can count for as many materials as their own Link Rating, which is also used in place of Level or Rank
About the Seller Hey There, I'm Noxxiz aka Robert
Once your speed is 4, you've achieved "max speed," and your speed can't go any higher