Can you please explain how the blessing Sigmar's Hammer works?

It's requirement states: 3 Favour without needing to Curry Favour.

When you cast blessings, you first cast it, then (if) that's successfull you check to see if you have enough Favour for it to trigger.

If you have enough, it triggers normally, if not you have to curry favour to make it trigger.

So for Sigmars hammer, you HAVE to have 3 favour when you cast the blessing, you can't cast it with 2 favour, and then curry afterwards.

Thank you very much!

Rally to me Heirs of the Empire.

For the Emperor.

FOR SIGMAR!

...

*cough* couldn't help myself. Love that card.