Trouble is Brewing. Blood & Alchemy is an expansion for Vampire: The Masquerade -Rivals Expandable Card Game that adds two new clans: Tremere & Thin-bloods. The Tremere are masters of Blood Sorcery who draw incredible power from their Blood, while the Thin-bloods must mix a plethora of chemicals with their Blood to extract power from it. You may play these two clans head-to-head or simply integrate them with your Core Set to give you more options for mixing clans and creating new decks! Requires Vampire: The Masquerade -Rivals Expandable Card Game to play.