Block vs Dodge: When to Build Each

> Patch note: Slay the Spire 2 is in Early Access, so balance, card values, and encounter details can change. This guide focuses on stable deckbuilding principles and will be updated after major patches.

Defensive Philosophy

Defense in Slay the Spire 2 comes in two main flavors: block, which prevents damage directly, and dodge, which prevents damage conditionally. Understanding when each works helps you build better defensive decks.

Block is the default defense. It is reliable, visible, and scales predictably. Dodge is situational. It can be more energy-efficient than block but fails at critical moments.

Most beginners should start with block. It teaches defensive fundamentals without adding randomness. Once you understand block, experiment with dodge in decks that support it.

Block Mechanics

Block prevents incoming damage point for point. If an enemy attacks for 20 and you have 15 block, you take 5 damage. Simple and reliable.

Block advantages:

• Predictable: You know exactly how much damage you prevent
• Scalable: Dexterity and block-boosting effects improve all block cards
• Retentive: Some block carries between turns, creating snowball defense
• Universal: Every character has access to block cards

Block disadvantages:

• Energy intensive: Preventing big attacks requires playing multiple block cards
• Decay: Most block disappears at turn end unless you have retention
• Vulnerable to debuffs: Vulnerable reduces block efficiency by 25%

Dodge Mechanics

Dodge prevents an attack entirely when triggered. If an enemy attacks for 20 and you dodge, you take 0 damage. If the dodge does not trigger, you take full damage.

Dodge advantages:

• Energy efficient: A single dodge effect can prevent massive damage
• All-or-nothing prevention: Completely avoids damage rather than reducing it
• Synergy potential: Some cards reward dodging or trigger effects on dodge

Dodge disadvantages:

• Random: You cannot guarantee dodge triggers on the attacks you most need to avoid
• Inconsistent: Multiple small attacks waste dodge on minor damage
• Limited scaling: Few effects improve dodge chance beyond base values

Matchup Analysis

Building Block Decks

Block decks need three components: block generation, block scaling, and a reason to survive.

Generation comes from block cards. Draft enough that you can block most enemy attacks consistently. Scaling comes from dexterity, retention, or block-boosting effects. The reason to survive is your damage source.

A common beginner mistake is drafting block without damage. A deck that prevents all damage but deals none cannot win. For every three defensive cards, ensure you have two offensive cards.

Building Dodge Decks

Dodge decks need higher dodge chance, synergy payoffs, and backup defense.

High dodge chance requires multiple dodge sources or cards that specifically boost dodge percentage. Without high base chance, dodge is too random to rely on.

Synergy payoffs reward dodging with extra effects: damage, card draw, or counterattacks. These make dodge mechanically interesting beyond simple damage prevention.

Backup defense is mandatory. Even a 70% dodge chance fails 30% of the time. You need some block or healing for the turns where dodge fails.

Hybrid Approaches

Some advanced decks mix block and dodge. The block handles multiple small attacks. The dodge handles the occasional big attack. This hybrid works when both defenses are strong individually.

Do not build weak hybrid decks. A deck with a little block and a little dodge often dies to medium attacks that neither defense handles well. Commit to one primary defense and use the other as backup.

Internal Links

For comprehensive defensive strategy, read best defensive strategy. For block-specific builds, see block build guide.