Each XY: Evolutions - booster pack contains 10 randomly inserted game cards

Advanced Search Sets Random Syntax Aggravate Anger of the Gods Arashi, the Sky Asunder Artistic Process Ashen Firebeast Ashling the Pilgrim Ashling the Pilgrim Avatar Ashling's Command Astral Arena Avengers Disassembled Baki's Curse Balefire Dragon Barrage of Boulders Battle-Scarred Goblin Blasphemous Act Blazing Volley Bloodfire Colossus Bloodfire Dwarf Bloodfire Kavu Bloodletter Boiling Earth Borrowing the East Wind Breath of Darigaaz Brotherhood's End Burn Down the House Burning of Xinye Calamitous Cave-In Caldera Hellion Call Forth the Tempest Canopy Surge Cataclysmic Prospecting Cathedral Membrane Cave-In Chain Reaction Chandra's Fury Chandra, Flamecaller Chaos Balor Cinderclasm Cinderslash Ravager Claws of Wirewood Cloudthresher Conductive Current Corrosive Gale Cosmotronic Wave Crush the Weak Crypt Rats Dagger Caster Dakmor Plague Deafening Clarion Desert Sandstorm Destructive Force Devastate Devastating Dreams Disaster Radius Downdraft Dragonback Assault Dry Spell Earthquake Earthshaker Evincar's Justice Explosive Getaway Extinguisher Battleship Falling Star Famine Fang Dragon Fang Dragon Fast // Furious Fast // Furious Fault Line Festering Evil Fiery Confluence Fire Juggler

This includes triggers that look for when permanents die (which is simply shorthand for is put into a graveyard from play) or are destroyed (shorthand for dies due to lethal damage, including deathtouch damage, or a destroy effect)
There's also a shiny chaos emerald to be spotted in the tool box, a nice little nod to the collectible items
In the two months prior to this announcement, approximately 15.8% of new submissions included a request for Sub-Grades
In addition, its a new cert # which for whatever reason can add a premium these days