New Mechanics and Synergies : The deck introduces and utilizes the Dungeon mechanic, allowing you to venture into dungeons like the Lost Mine of Phandelver for powerful rewards
Transmute is about trading card utility, upgrading one card for a card more fine-tuned for your needs
Mainly, its because dredge can enable some incredible graveyard synergies
PRERELEASE PACK Finally, we have the Prerelease Pack
The World Championship functioned like a Pro Tour, except that competitors had to present their skill in three different formats (usually Standard, booster draft, and a second constructed format) rather than one
Funnily enough, it's not doing anything that actually violates black-borded rules