[Ironhawk]

To bless units, put them near a priest scripted to cast one or more Blessing. Once this spell hits them, the bless of your pretender will conferred onto them. You only get bless effects when the natural magic level of your pretender is 4 or above in a certain path. Very powerful bonuses are conferred at the level 9s. Alternatively to Blessing you can cast Divine Blessing which effects every friendly unit in one go.

Amazons as fighters are fairly ordinary. I would rate them as good light infantry but nothing more. Definitely dont use them as your front line shock troops. Griffons are pretty good fliers but as others have pointed out, you need a good bless to really get your money's worth out of them. Assuming you had a half-decent bless, a commonly accepted use of fliers is Attack Archers. This works well as archers are usually lightly armored and bad fighters. Plus, they are usually located in the enemy's rear so if you are lucky perhaps you can kill a mage or two as well.