North-Wind Herald is a unit card.
How to Get Edit
|•||On Play:||"The storm is upon you."|
While North-Wind Herald is free, it has no influence requirements.
North-Wind Herald's cost is zero on turns where its free condition is met, and will reset to the original cost when the turn ends. This can be important for cost matters effects, such as Unstable Form and Equivocate. Unstable Form will transform a free Herald into a 1-cost unit, but playing Unstable Form, as your first spell for the turn, will then transform it into a 7-cost unit.
North-Wind Herald is part of an incomplete cycle of unit cards in The Empty Throne which are free under specific conditions.