2 for 4 damage that you can put wherever you want is already fine. Early on you get one, and often two progress counters to help you upgrade, which makes this a card you are looking for most of the time in the early game. Once you are Version 3 this card does 4 damage and then 2 more on demand, or if you defeated an enemy with it, it does 4 damage and then 2 damage on demand TWICE. Getting 6 damage out of a 2 cost card is great. Getting 8 damage out of a 2 cost card is amazing.