Major Gods' God Power
Odin:- Odin's god power is Great Hunt. It will cause the targeted group of animals to multiply a little.
Thor:- Thor's god power is Dwarven Mine. On casting on a specific area, a mine will grow. The amount of gold in the mine increases as one advances through the ages.
Loki:- Loki's god power is Spy. Casting it on an enemy unit will give you the Line of Sight (LoS) of the unit until it's killed.
Minor Gods' God Power
Freyja:- Freyja's god power is Forest Fire. When casted on a tree, it will begin to burn, and all the units or buildings nearby will take damage. The fire can spread over other trees nearby in a limited radius, before collapsing th e trees.
Forseti:- Forseti's god power is Healing Spring. When cast on an area, a spring comes up, which will heal all friendly units nearby. It's downside is that enemies can take control of the spring.
Heimdall:- Heimdall's god power is Undermine. Cast on a wall, tower, fortress or town-centre, it deals a lot of damage to them.