What abot a third giant boss, Ice King, to compliment Obor and Bryophyta.
Make them each drop a "giant's finger" which all three can be combined into "Giants Ring".
If the whole concept is F2P, you will introduce new players to how late game bossing feels like with the grinding and item combining.
As there is no useful F2P rings atm, it wouldn't need to be much stats at all, as anything will be an improvement.
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