These new cards are available on their own in the Dominion: Update Pack

The set can be used on its own to create a heavily ruined settlement

more powerful than regular Discovery tiles

dashing into and out of battle in a gameplay style reminiscent of a cavalry charge

this was a machine of brute force

Mindbug: First Contact - New Servants citadel These new cards are availableWith the Add On Pack you get access to 28 cards: 24 additional creature cards (12 new creatures with duplicates) and 4 additional Mindbugs (required to play the 4 player mode). List of creature cards: Bugserker (x2) Count Draculeech (x2) Creep from the deep (x2) Ferret Pacifier (x2) Froblin Instigator (x2) Goreagle Alpha (x2) Hamster Lion (x2) Hungry Hungry Hamster (x2) Hyenix (x2) Majestic Manticore (x2) The Lurker (x2) Turf the Surfer (x2)