Bundle of Joy•Skill

Is Bundle of Joy good in Slay the Spire 2?

In Slay the Spire 2, Bundle of Joy is a rare skill from the Regent card pool. Its effect: Add random Colorless cards into your Hand. Performance-wise it’s a solid if unspectacular include, rated C tier overall.

Over 14 tracked runs its win rate sits at 21.4%, 8.8% ahead of the 12.6% all-deck baseline. It sees niche play, included in only 2.7% of eligible runs. Within Regent runs it’s drafted 8.4% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.0 copies on average.

Its standout pairing so far is Particle Wall, which lifts its win rate by +53.6% when the two share a deck. On the relic side, Tiny Mailbox is its standout companion, worth a +45.2% win-rate swing alongside it. It costs 1 energy, gets upgraded 42.9% of the time, and tends to be picked up near floor 13.

Upgrading the card adds +1 Cards to its stat line. Of the runs that drafted it, 3 ended in victory against 11 deaths and 0 abandons. Its most common run-ender is Waterfall Giant Boss, finishing 14.3% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Bundle of Joy fits a Regent deck.

Best Cards to Pair with Bundle of Joy

Bundle of Joy’s strongest card pairings so far are Particle Wall (+53.6%), Black Hole (+53.6%), and Foregone Conclusion (+45.2%), each shown with the win-rate lift it adds.

Particle Wall+53.6%4 runsBlack Hole+53.6%4 runsForegone Conclusion+45.2%3 runsGlow+45.2%3 runsRoyal Gamble+45.2%3 runsManifest Authority+38.6%5 runs

Based on small co-occurring samples — treat these as early signals, not final verdicts.

Bundle of Joy Win Rate by Class

Exclusive to the Regent, Bundle of Joy posts a 21.4% win rate over 14 tracked runs.

The Regentappears in 8.4% of its runs (14 tracked)

Best Relics for Bundle of Joy

The relics that swing Bundle of Joy’s win rate the most are Tiny Mailbox (+45.2%), Centennial Puzzle (+45.2%), and Strike Dummy (+28.6%), with each lift shown.

Tiny Mailbox+45.2%3 runsCentennial Puzzle+45.2%3 runsStrike Dummy+28.6%4 runsVenerable Tea Set+28.6%4 runsPendulum+28.6%4 runsFestive Popper+11.9%3 runs

Based on small co-occurring samples — treat these as early signals, not final verdicts.

Bundle of Joy Card Details

A 1-energy rare skill, Bundle of Joy is upgraded 42.9% of the time and tends to enter the deck around floor 13.

Add random Colorless cards into your Hand.

Upgrade: +1 Cards

What Ends Runs with Bundle of Joy

Runs holding Bundle of Joy end most often against Waterfall Giant Boss (14.3%) and Vantom Boss (14.3%) — the share of its runs each accounts for is shown.

• Waterfall Giant Boss14.3% of runs
• Vantom Boss14.3% of runs

See Also

Keep exploring Slay the Spire 2 tier lists and stats below.