Deck building in Achroma - Siege of Draco Temple

About Achroma, from BoardGameGeek:

Achroma is a beautifully illustrated card game for 2-6 players. It's fast, fun, easy to pick up and has lots of tactical depth. Achroma is set in The Five Realms and reveals more of a overarching narrative that players can influence by using the Achroma app when they play. During a game of Achroma, you'll spend shards – your life energy – to deploy and attack with heroic Characters, equip them with Objects of Power, harness Locations and unleash cunning Actions. Doing so will enable you to gain, drain and steal shards in return. There are two ways to win a game - get to 30 shards, or drain the other players to 0. ‘Light side' Chroma decks lean to gaining shards, and ‘dark side' Achrom decks lean to draining and stealing shards from other players. Each Achroma release is a jumping on point for fresh players and an expansion for existing players. Each themed release is built around a narrative set in The Five Realms and comes with new cards to collect, trade, and play with, along with new factions, abilities, and keywords. Each release is supported by short stories, soundtracks and Achroma app updates.