When a knight garrisons itself to resolve a region's play effect, whose state restriction matters?

Question

Accepted Answer

The region's, and you already met it when you played the region. The garrisoned card itself is not resolved. The Determined knight is further restricted: it can only garrison into a region that has no garrisoned card.

Imperium: Horizons

When a knight garrisons itself to resolve a region's play effect, whose state restriction matters?

Imperium: Horizons

When a knight garrisons itself to resolve a region's play effect, whose state restriction matters?