The first time you play an Attack, Skill and Powers each turn, gain 1 Strength and 1 Dexterity.
Rainbow Ring currently ranks #183 out of 292 in the Slay the Spire 2 Relics tier list with a rating of 1472.05.
This ranking is based on 36 community votes (17 wins, 19 losses) for a win rate of 47.2%.