Snecko Eye

An Ancient relic obtained as a choice from Dalv (Act 3). One of the options presented when you meet Dalv in Act 3. Extremely important as a final-act power-up.

Snecko Eye was one of the most beloved relics in Slay the Spire 1, and it retains top-tier status in STS2. You gain Confused, which randomizes card costs to 0-3 every turn, but your hand size increases by 2 (to 7), letting you prioritize the cards that rolled 0 cost.

The Math Behind Confused

• Expected cost is (0+1+2+3)/4 = 1.5 — so any card costing 2 or more averages a lower cost.
• Out of 7 cards in hand, roughly 1.75 are 0-cost on average (25% chance each).
• Because you prioritize 0-cost plays, actual average play cost is lower than 1.5.
• A cost-2 card becomes expected cost 1.5, a cost-3 card becomes expected cost 1.5 — higher-cost cards benefit more.

When to Take It

• If deck average cost is 1.5 or higher, taking it is basically correct.
• Avoid if you have many 0-cost cards (Shiv spam, Rage loops) — the cost-up risk is too high.
• You take it in Act 3 when deck direction is already set; if you've been collecting high-cost cards, take without hesitation.
• In decks with several Powers, 0-cost Power drops early create explosive setup.

Per-Character Rating

• Confused re-randomizes cost "at draw time each turn." Cards retained via Retain are re-rolled too.
• X-cost cards are unaffected (display changes but energy usage is standard).
• Never take it with a 0-cost-centric deck — it only raises expected cost.
• Pairs excellently with Exhaust — luxuriate in firing off 0-cost high-cost Exhaust cards.