Surges Banked or temporary?

By docForsaken, in Runewars Tactics

For units that need 2 surges to activate a power, if you roll a single surge, do you keep it and bank it for next roll or is it discarded at the end of the turn? Trying to figure out if it's basically just re-roll fodder or not.

Surges are never banked. Use em or lose em.

Thanks Nungunz. That makes a big difference.