Master Planner•Power

Is Master Planner good in Slay the Spire 2?

In Slay the Spire 2, Master Planner is a rare power from the Silent card pool. Its effect: When you play a Skill, it gains Sly. Performance-wise it’s a solid if unspectacular include, rated C tier overall.

Over 36 tracked runs its win rate sits at 33.3%, 14.4% ahead of the 18.9% all-deck baseline. It sees niche play, included in only 0.9% of eligible runs. Within Silent runs it’s drafted 3.7% 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 Tools of the Trade, which lifts its win rate by +18.3% when the two share a deck. On the relic side, Tiny Mailbox is its standout companion, worth a +19.1% win-rate swing alongside it. It costs 2 energy, gets upgraded 38.9% of the time, and tends to be picked up near floor 17.

Upgrading the card adds -1 EnergyCost to its stat line. Of the runs that drafted it, 9 ended in victory against 18 deaths and 9 abandons. Its most common run-ender is Test Subject Boss, finishing 5.6% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Master Planner fits a Silent deck.

Best Cards to Pair with Master Planner

Master Planner’s strongest card pairings so far are Tools of the Trade (+18.3%), Reflex (+15.8%), and Tactician (+15.8%), each shown with the win-rate lift it adds.

Tools of the Trade+18.3%12 runsReflex+15.8%10 runsTactician+15.8%11 runsHidden Daggers+15.6%6 runsPredator+15.4%3 runsAfterimage+15.4%4 runs

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

Master Planner Win Rate by Class

Exclusive to the Silent, Master Planner posts a 33.3% win rate over 36 tracked runs.

The Silentappears in 3.7% of its runs (36 tracked)

Best Relics for Master Planner

The relics that swing Master Planner’s win rate the most are Tiny Mailbox (+19.1%), Potion Belt (+18.8%), and Oddly Smooth Stone (+15.7%), with each lift shown.

Tiny Mailbox+19.1%4 runsPotion Belt+18.8%6 runsOddly Smooth Stone+15.7%7 runsTingsha+15.4%3 runsBronze Scales+15.4%3 runsVenerable Tea Set+12.5%8 runs

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

Master Planner Card Details

A 2-energy rare power, Master Planner is upgraded 38.9% of the time and tends to enter the deck around floor 17.

When you play a Skill, it gains Sly.

Upgrade: -1 EnergyCost

What Ends Runs with Master Planner

Runs holding Master Planner end most often against Test Subject Boss (5.6%), Vantom Boss (5.6%), and Entomancer Elite (5.6%) — the share of its runs each accounts for is shown.

• Test Subject Boss5.6% of runs
• Vantom Boss5.6% of runs
• Entomancer Elite5.6% of runs

See Also

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