Read attack and Vulnerable effects
If you want direct attack descriptions, start with Bash and compare its listed upgrade; Clash also records a condition on when it can be played.
Bash ClashThis reference focuses on ten Ironclad cards listed for Slay the Spire 1: Bash, Clash, Flex, Headbutt, Heavy Blade, Perfected Strike, Shrug It Off, True Grit, Spot Weakness, and Corruption. Their recorded text describes attacks, Block, Strength changes, card retrieval, and Exhaust-related effects. Where the source gives both base and upgraded text, both are included so the listed change is clear. The card list supplies functional descriptions but does not establish comparative effectiveness, acquisition locations, costs, or a recommended deck. Ascension and other progression systems are outside this focused card reference.

If you want direct attack descriptions, start with Bash and compare its listed upgrade; Clash also records a condition on when it can be played.
Bash ClashIf you are looking at Strength interactions, compare Flex’s temporary Strength, Spot Weakness’s intent condition, and Heavy Blade’s stated Strength multiplier.
Flex Spot Weakness Heavy BladeIf you want defensive or hand-management functions, review the Block effects alongside Headbutt’s discard-pile retrieval and Corruption’s Skill and Exhaust text.
Shrug It Off True Grit Headbutt CorruptionChoose a topic to see how it works, where it helps and what to consider.
Bash deals damage and applies Vulnerable. Its listed upgrade increases both the damage and Vulnerable applied.
Understand this choiceClash deals damage, but can be played only when every card in your hand is an Attack.
Understand this choiceFlex grants Strength for the turn, then removes that granted amount at turn end; its upgrade doubles the listed amounts.
Understand this choiceHeadbutt deals damage and places a chosen card from the discard pile on top of the draw pile.
Understand this choiceHeavy Blade deals damage, with Strength affecting its damage multiple times; the listed upgrade increases that multiplier.
Understand this choicePerfected Strike deals damage and adds damage for all cards containing “Strike”; upgrading raises the additional amount per such card.
Understand this choiceShrug It Off grants Block and draws one card in both listed versions; upgrading increases the Block amount.
Understand this choiceTrue Grit grants Block and Exhausts a card; upgrading raises Block and changes the Exhaust selection from random to chosen.
Understand this choiceSpot Weakness grants Strength only if the targeted enemy intends to attack; the upgraded version grants one additional Strength.
Understand this choiceCorruption makes Skills cost 0 and Exhausts each Skill when played, according to the listed card text.
Understand this choiceThe card text says Clash can only be played if every card in hand is an Attack; its damage figure does not remove that condition.
Both listed versions instruct the player to lose the Strength granted by Flex at the end of the turn.
The base card specifies random Exhaust selection, while the upgraded text says to Exhaust one card without the random qualifier.
A focused reference to ten Ironclad cards and their recorded effects, including listed upgrades and play conditions. Card details come only from the retrieved Slay the Spire 1 card-list passage. This does not attempt a complete card, relic, character-unlock, or Ascension guide.
Explanations prepared with GPT-6 Luna and checked against the linked references. These are source-reviewed guides. They do not establish independently tested optimal builds or exact upgrade budgets. How coverage works.