They will use confetti holofoil like past McDonald's promos
How to obtain the Team Rocket Grunt card in Pokmon TCG Pocket, and what is the strategy
While more cards are bound to be confirmed over spoiler season, so far we've seen Castle Dracula (Voldaren Estate), Count Dracula (Sorin the Mirthless, which is getting another version with art by Castlevania's Ayami Kojima), Mina Harker (Thalia, Guardian of Thraben), Sisters of the Undead (Olivia, Crimson Bride), Dracula, Lord Of Blood (Voldaren Bloodcaster), and Abraham Van Helsing (Savior of Ollenbach)
You are generally much better off keeping him at high loyalty so you can react to more with the -X as you need
Aura Shards One of the most brutal creaturefall cards, Aura Shards warps EDH games, at least ones involving Game Changers