Surprise represents a moment where one side **doesn’t realise a fight is about to start**.
It is **not** a full extra round. It happens **only at the start of combat**.
#### The Core Rule (Read This First)
> **Surprise is a condition, not a round.**
Some creatures are surprised. Some aren’t.
#### When Does Surprise Happen?
Surprise happens when:
- One side is **unaware** of the other
- Combat begins suddenly
This is usually decided using:
- **Stealth checks** vs **Passive Perception**
#### Determining Surprise (Step by Step)
1. The ambushing side rolls **Stealth**
2. The DM compares that roll to each creature’s **Passive Perception**
3. Any creature whose Passive Perception is **lower** than the Stealth roll is **surprised**
4. Combat starts as normal with **initiative**
Note: Surprise is determined **per creature**, not per group.
#### What Being Surprised Means
If you are **surprised**:
- You **can’t move or take actions** on your first turn
- You **can’t take reactions** until that turn ends
After your first turn ends, you act normally.
#### What Surprise Does NOT Do
Surprise:
- Does **not** give a free round
- Does **not** let attackers go twice
- Does **not** automatically give advantage
- Does **not** prevent initiative rolls
#### Initiative Still Matters
Even if surprised:
- You still roll initiative
- You still have a turn — you just do nothing on it
High initiative still helps:
- You regain reactions sooner
- You act earlier next round
#### Common Situations Explained
##### Sneak Attack Example
A rogue hidden in shadows attacks:
- If the target is unaware → target is surprised
- Rogue likely has advantage
- Combat starts immediately after the attack
##### Partial Surprise
One guard notices something. Others don’t.
Result:
- That guard is **not surprised**
- The others **are surprised**
##### “We Knew Something Was Wrong”
If creatures were alert or suspicious:
- The DM may rule **no surprise**
- Or grant advantage/disadvantage instead
#### What Cancels Surprise?
You are **not surprised** if:
- You knew enemies were nearby
- You heard something approaching
- You were actively watching
- You had time to prepare
Suspicion ≠ surprise.
#### DM Rule of Thumb
> **If a creature could reasonably react to the threat, it is not surprised.**
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#### Summary
> **Surprised creatures lose their first turn, not the whole round.**
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