Colossus Skill

Is Colossus good in Slay the Spire 2?

In Slay the Spire 2, Colossus is an uncommon skill from the Ironclad card pool. Its effect: Gain 5 Block. You receive 50% less damage from Vulnerable enemies this turn. Performance-wise it’s a solid if unspectacular include, rated C tier overall.

Over 753 tracked runs its win rate sits at 28.6%, 14.7% ahead of the 13.8% all-deck baseline. It sees niche play, included in only 3.6% of eligible runs. When it is actually offered players take it 39.1% of the time, and that looks correct: those runs win 28.0% against 20.6% for runs that passed, a +7.3% pick lift over 628 decided runs. Within Ironclad runs it’s drafted 16.1% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.1 copies on average.

Its standout pairing so far is Demonic Shield, which lifts its win rate by +28.9% when the two share a deck. On the relic side, Royal Stamp is its standout companion, worth a +33.5% win-rate swing alongside it. It costs 1 energy, gets upgraded 25.9% of the time, and tends to be picked up near floor 17.

Upgrading the card adds +3 Block to its stat line. Of the runs that drafted it, 212 ended in victory against 530 deaths and 11 abandons. Its most common run-ender is Test Subject Boss, finishing 6.4% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Colossus fits a Ironclad deck.

Pick or Skip: Colossus

Players take Colossus in 39.1% of the 1796 offers it appears in; those runs win 28.0% against 20.6% for runs that passed, a pick lift of +7.3% over 628 decided runs.

Taken 702 times out of 1796 offers.

Pick rate when offered counts offers, not runs: out of every time the game put this in front of a player, how often it was taken. It is not the same number as the share of runs that end up containing it.

Pick lift is the sample-adjusted gap between runs that took the option and runs that passed on it. It is the fair way to rank choices, because raw win rates put the smallest samples on top.

When to Pick Up Colossus

Of the 3 pickup windows recorded for Colossus, Act 3 is the best: 48.1% across 108 runs.

Win rate of runs by the act Colossus entered the deck. Acts that have not reached the sample floor show their run count only.

Best Cards to Pair with Colossus

Colossus’s strongest card pairings so far are Demonic Shield (+28.9%), Stoke (+23.9%), and Prolong (+22.8%), each shown with the win-rate lift it adds.

Demonic Shield+28.9%35 runsStoke+23.9%66 runsProlong+22.8%17 runsMaster of Strategy+22.6%21 runsMad Science+21.9%69 runsFeel No Pain+18.0%99 runs

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

Colossus Win Rate by Class

Exclusive to the Ironclad, Colossus posts a 28.2% win rate over 744 tracked runs.

The Ironcladappears in 16.1% of its runs (744 tracked)

Best Relics for Colossus

The relics that swing Colossus’s win rate the most are Royal Stamp (+33.5%), Sword of Jade (+29.4%), and Molten Egg (+27.5%), with each lift shown.

Royal Stamp+33.5%22 runsSword of Jade+29.4%26 runsMolten Egg+27.5%29 runsMummified Hand+26.9%33 runsForgotten Soul+26.9%24 runsThe Chosen Cheese+23.0%78 runs

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

Colossus Card Details

A 1-energy uncommon skill, Colossus is upgraded 25.9% of the time and tends to enter the deck around floor 17.

Gain 5 Block. You receive 50% less damage from Vulnerable enemies this turn.

Upgrade: +3 Block

What Ends Runs with Colossus

Runs holding Colossus end most often against Test Subject Boss (6.4%), Queen Boss (6.1%), and Kaiser Crab Boss (5.7%) — the share of its runs each accounts for is shown.

• Test Subject Boss6.4% of runs
• Queen Boss6.1% of runs
• Kaiser Crab Boss5.7% of runs
• Decimillipede Elite4.5% of runs
• Knowledge Demon Boss3.6% of runs

See Also

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