Upon pickup, obtain 4 Wax Relics. Every 3 combats, your left-most Wax Relic will melt away.
Toy Box currently ranks #207 out of 292 in the Slay the Spire 2 Relics tier list with a rating of 1450.45.
This ranking is based on 34 community votes (14 wins, 20 losses) for a win rate of 41.2%.