That is in the Goði moves – but a few things.

1) I’ve never actually run a SotI game with a Goði in it. It’s somehow not a popular book in my groups. I’m not sure why ^_^

2) The Goði’s moves are at-will. Often bonds in my games happen either through play (I’ll demo below) or during specific festivals and occurrences where if you end up with a suitable gift by the end, I will allow it. So if there will be a festival, and the man promised a suitable sacrifice, but the season didn’t leave him with spares – we play to find out what happens. Usually in such situations there’s a Goði present to make a sacrifice on the character’s behalf.

So here’s an example of how I’ve done things. Two of my players have to go fetch the Seiðkona because it’s winter and their goats are very sick. On the way some strangers come out of the forest, and they realize they’re bandits and will kill them. They strike first, and without honor, but swear a blood oath to Thor that they will never reveal what happened. Of course, at the next Allthing they’re called out for this by the daughter of the bandit leader, and they have to spill. They break a blood oath sworn to a god. Thor obviously notices and claims a bond. This is clearly a custom move – but everyone at the table thought it was obvious and intuitive. Apply bond as described above.

I don’t make this super frequent, but it’s enough in the game to bring in certain themes from the linked threat charts, and make the players feel like the fates/gods are meddling.

It’s a little shorthand on my GM side because I can sit down at the start of a session, check bonds with things like fates and gods and use that to weave a session.