Sly

Card property

If this card is discarded from your Hand before the end of your turn, play it for free.

A Sly card discarded from your Hand during your turn is played for free.

Timing: after the discard effect finishes, including any draw that comes with it (Calculated Gamble), each discarded Sly card auto-plays at no Energy cost, with a random target if it needs one.
Real discards only: the end-of-turn flush moves cards without discarding them, so Sly never fires there.
No target: an Unplayable Sly card, or one with no legal target, simply stays in the Discard Pile.
Sources: Sly can be printed on the card, given for one turn by Hand Trick, or added for the rest of combat by Master Planner.
Played normally: a Sly card played from your Hand still costs its printed Energy.

Named by

1 power

Cards with Sly

Abrasive

Power

Sly.
Gain 1 Dexterity.
Gain 4 Thorns.

Flick-Flack

Attack

Sly.
Deal 6 damage to ALL enemies.

Hand Trick

Skill

Gain 7 Block.
Add Sly to a Skill in your Hand this turn.

Haze

Skill

Sly.
Apply 4 Poison to ALL enemies.

Master Planner

Power

When you play a Skill, it gains Sly.

Sly.
Deal 3 damage to a random enemy 4 times.

Sneaky

Power

Sly.
Whenever another player attacks an enemy, gain 1 Block.

Named by

Notes

Silent's payoff: the expensive Sly cards are meant to be thrown away, never paid for. Haze, Reflex and Tactician cost 3, Abrasive is a 3-cost Power, Untouchable and Ricochet cost 2, Flick-Flack costs 1.
Lending Sly: Hand Trick lends it to a Skill for the turn, Master Planner gives it to every Skill you play.
Discard outlets: Calculated Gamble and Tough Bandages, which adds 3 Block per discard on your turn.

Changes by version

30 Jul 2026ReworkHaze Poison WeakPlaytest
Reworked Haze card: Uncommon - Skill - Cost 3 - "Sly. Apply 4(6) Poison to ALL enemies." to Uncommon - Skill - Cost 2 - "Apply 4(6) Poison and 1(2) Weak to ALL enemies."
4 Jun 2026Bug fixUnceasing Top Hidden DaggersBeta branch
Fixed an issue where, if the player had Unceasing Top relic, played Hidden Daggers card, and discarded a Sly card, Unceasing Top could cause the player to incorrectly draw a card before the Shivs were added to their hand
19 Feb 2026Bug fixWeakInternal playtest
Follow Through card now properly applies Weak when the last card played was a Skill played via Sly discard

All 20 patch notes17 older

11 Dec 2025ChangeInternal playtest
Sly application changed from Attacks to Skills
ChangeInternal playtest
Now only applies Sly for "this turn" instead of for the rest of the fight
Bug fixHand TrickInternal playtest
Hand Trick card now displays Sly keyword on cards it affects
13 Nov 2025InterfaceUnplayableInternal playtest
Sly cards no longer glow gold in discard selection screens when they're Unplayable or Bound
30 Oct 2025ChangeInternal playtest
Cards afflicted with Bound can no longer be autoplayed (via Sly or other means) after another Bound card has been played that turn
23 Oct 2025ChangeHand TrickInternal playtest
Changed Hand Trick card: give Sly to a Skill to Attack
UpgradeInternal playtest
Upgrade no longer gains Sly
ChangeInternal playtest
No longer Sly
18 Sep 2025ChangeUnplayableInternal playtest
Unplayable cards with Sly can no longer be played by being discarded
21 Aug 2025TextInternal playtest
Updated wording
10 Jul 2025Bug fixAcrobatics Tools of the TradeInternal playtest
Fixed softlock when playing Sly Acrobatics from Tools of the Trade power
26 Jun 2025Bug fixNostalgiaInternal playtest
Fixed a broken interaction between Nostalgia card and Sly
3 Apr 2025Bug fixCalculated Gamble Gambler's Brew Gambling ChipInternal playtest
Fixed an interaction between Sly and effects that draw immediately after discarding (i.e. Calculated Gamble, Gambler's Brew, and Gambling Chip)
23 Jan 2025Bug fixTest Subject Calculated GambleInternal playtest
Fixed a softlock when killing Test Subject by discarding a hand full of Sly cards via Calculated Gamble
16 Aug 2024Bug fixMaster PlannerInternal playtest
Master Planner card now has Sly hovertip
5 Jul 2024Bug fixInternal playtest
Sly cards discarded as part of a card play now trigger Follow Through card's condition
29 Jun 2024UpgradeMaster Planner InnateInternal playtest
Changed Master Planner: no longer gains Innate on upgrade, gains Sly instead
InterfaceInternal playtest
Cards with Sly now glow gold when you're choosing a card from your hand to discard
21 Jun 2024ChangeMaster PlannerInternal playtest
Changed Master Planner card: is now Sly
7 Jun 2024Bug fixHand TrickInternal playtest
The Sly keyword now renders properly in the Hand Trick selection screen
17 May 2024Bug fixBurst AcrobaticsInternal playtest
When Burst is played via an auto-play effect that was triggered by a Skill (like Sly + Acrobatics), it no longer copies that Skill
4 Aug 2023Bug fixInternal playtest
Fix softlock if you pick a card that is already selected in a chain of Sly selection