At the start of each combat, choose 1 of 3 random Colorless cards and add the chosen card into your Hand.
Toolbox currently ranks #52 out of 292 in the Slay the Spire 2 Relics tier list with a rating of 1576.57.
This ranking is based on 43 community votes (26 wins, 17 losses) for a win rate of 60.5%.