Board Thread:Game Discussion/@comment-9182195-20130508085214/@comment-8284783-20130508152549

Each time you level up, all your energon and battle cubes are recharged. You can time this with certain key fights (such as bosses during events) to be able to put in more cubes to damage them quicker (before the timer expires, or to get the finisher bonus).

I gotta admit that, right now, the allies/social aspect of the game seems lacking. But since the game just came out on iOS, it is very possible they are planning on fleshing out that aspect more as time goes on.

A lot of other social CCGs/card battlers feature clans or guilds, so it only feels natural that this game would eventually get a similar system (and it would make a lot of sense to be able to call on specific people to help you with more difficult bosses).

I'll try to check during this event if some of my allies are among the people I call for help on boss fights...