The free spins feature in Ring of Odin comes in two forms. The normal free spins trigger with three scatter symbols landing on the reels. The Odin’s Ring feature will be active throughout this feature, you’ll originally have four spins, but any scatters that land on those spins will add one to the count.
If a scatter symbol lands in a ring during the Odin’s Ring feature, you’ll trigger the Multiplier Free Spins. The feature is the same here, except for one big difference, scatters land on the middle three reels before the feature, and any that are in Odin’s Ring will add 1 to a multiplier up to a max of 9x. That multiplier will then lock in place for the duration of the feature, which is four spins plus one3 for any additional scatter that lands.