Void Power Edit
BattleForge uses a unique game mechanic called Void Power. It is very important that you understand the Void Power mechanic if you wish to play PvP. Basically for every unit or building that dies or spell that you cast, 90% of the power you spent on it goes into your Void Pool. This Void Pools slowly feeds power back into your actual Power Pool where it can be used again. The more power in the Void Pool, the faster it feeds back into the Power Pool. So, losing a unit in BattleForge isn't really a disadvantage, you will shortly get the power back to use again. The only exception is Orbs and Power Wells. Neither gives you a Void Power refund when they are destroyed. So protect them at all costs. If you lose one, it is a permanent power disadvantage and could potentially lose you the match.
Activated abilities also only return 90% power to the void, but toggle abilities and repairs return 100% power to the void.
The rate at which power flows back into your Power Pool is about 1 power per 2 seconds per 50 power in the Void Pool.
Do not confuse your gatherable power pool with your Void Pool. Both of these can be seen at the top right corner of your game screen. The gatherable power pool is a constant diminishing number (bottom) that can increase if you construct more wells on the map. Your void pool does not affect this.