This is where the fun really starts! Expansion packs consists of 5 new cards that add many new mechanics, layers of complexity, tactics and strategies to the base game.
The first expansion pack is themed around a new major mechanic: Adding cards from your shop for free.
It also features a new card type combo: Event/Unit, a new Event/Action card and a Tier 3 Event card that permanently reduces the cost of Resources and Units in your shop.
Adding cards
Adding a card lets you pick a card from your shop and add it to your deck directly without paying its cost or triggering its cooldown. This enables you to build awesome decks much faster than usual — if you can find the right combo pieces!
Scale Up
Scale Up is a Tier 3 Event card that can give you massive discounts on Units and Resources for the rest of the game, and you can even stack them in multiples for a dramatic effect!
Event/Unit
Retriever is a cheap Unit that lets you add another, more expensive card from your shop. For example: when you're trying to win (a popular thing), you can add a Tank, giving you 3 extra attack power right away, for only 4 Energy!
