Colossi

From BoardGameGeek:

A 2-4 player tactical hand-building game that gives you loads of opportunities to be clever and outwit your opponents. You are a Colossus, battling for control of beautiful Environments. You will build hands on 3 different Environments at once because you don't yet know where the next Skirmish will happen. Each player starts with an identical deck, but you can steal / sacrifice cards to create a better deck. Each Environment and Item has special rules that create interesting and unique problems and opportunities. Colossi rewards clever tactics and thinking on your feet. The first player to win 3 Skirmishes wins the game.