In D&D 5e, the Polearm Master feat is tightly tuned around reach weapons, and the spear is one of the most reliable and accessible choices for fighters and other martial classes seeking control and durability. This evergreen explainer focuses on how the spear synergizes with Polearm Master, detailing the AC and opportunity cost trade-offs, step-by-step interaction with reach weapon rules, and practical tactics for both frontline defense and mobile skirmishing. You will find clarity on what the feat actually does, when it is lawful and when it is not, and how to build around it for consistent, long-term effectiveness.
What Is Polearm Master and How Does It Work
Polearm Master is a feat from Xanathar's Guide to Everything that rewards you for fighting at the end of a long reach weapon. It is not a class feature and does not scale with level; its value comes from locking a specific play pattern into place. By committing to this feat early, you gain two key benefits: one preventative and one proactive. Preventatively, it reduces the opportunity cost of engaging enemies at your reach. Proactively, it gives you extra reactions and controlled movement on your turn. Because it is a feat, you must meet its prerequisites and choose it at level 4, 8, 12, 16, or 19, or via an Ability Score Improvement allowed by your class. Understanding these basics is essential before exploring any weapon-specific nuances, including how the spear fits the build.
Core Mechanics at a Glance
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Feat Name | Polearm Master | Xanathar's Guide to Everything (official) |
| Prerequisite | Strength 13, Dexterity 13 | PHB/XGTE p.48 |
| Proficiency Requirement | Proficiency with the chosen reach weapon | PHB/XGTE p.48 |
| Trigger A | When a creature enters your reach | XGTE p.48 |
| Effect A | Make one opportunity attack without provoking further opportunity attacks | XGTE p.48 |
| Trigger B | When you take the Attack action on your turn | XGTE p.48 |
| Effect B | Make a bonus melee weapon attack or move up to 5 feet | XGTE p.48 |
Why the Spear Is a Natural Fit for Polearm Master
The spear is one of the few weapons that is both a reach weapon and simple, making it easy to qualify for Polearm Master without multiclassing or weapon proficiencies. As a reach weapon, it threatens the space 5 feet away, which is exactly the zone that triggers the feat. Additionally, the spear can be thrown, giving you flexibility if you need to engage at range or against multiple opponents. Unlike longer reach weapons such as the halberd, the spear does not require you to enter someone's space to make opportunity attacks, which simplifies your movement math. By using the spear, you preserve the defensive intent of Polearm Master while maintaining options in both melee and ranged engagement.
Reach Weapon Requirements and Interactions
For Polearm Master to function, your weapon must have the reach property. The spear possesses this property out of the box, and you do not need any special training or a fighting style to use it. When you use the Attack action with a spear and take the Attack action, you can follow up with a bonus melee weapon attack thanks to the feat if a hostile creature moved into your reach. You can also move up to 5 feet without provoking opportunity attacks, which is a cornerstone of the polearm 'jockey' playstyle. Creatures provoking opportunity attacks from your reach must still respect the normal rules about when attacks of opportunity are triggered, and the feat ensures you do not lose reactions unnecessarily when they step in.
Breaking Down the Two Main Benefits
The first benefit protects you from unnecessary punishment when enemies try to bypass your reach. Because opportunity attacks are automatically triggered when a hostile creature enters your reach while you are not incapacitated, you would normally lose your reaction to other threats. Polearm Master prevents that, letting you make an opportunity attack and still keep your reaction for spells, readied actions, or responses. This is especially valuable against dash-oriented foes or when you are trying to control choke points. The second benefit gives you an action economy edge on your turn. By choosing the bonus melee weapon attack, you increase pressure on enemies standing at your feet. If you choose the 5-foot move, you can fine-tune your positioning, closing small gaps or retreating just enough to reset ranges. This flexibility is what makes the build feel active rather than static.
Comparison of Options After Polearm Master with a Spear
- Bonus Melee Weapon Attack: Adds immediate damage and applies your modifiers, effective versus single targets at your feet.
- Move 5 Feet: Improves tactical positioning, improves reach denial, and avoids opportunity attacks from your threatened zone.
- Reaction Usage: Remains available for opportunity attacks triggered by the feat, spells, and other readied actions.
Class Choices and Build Paths Around Spear and Polearm Master
Certain classes synergize strongly with this build. The fighter excels here, especially if you take the second Fighting Style that matches your playstyle, such as Defense for additional AC or Second Wind for sustainability. Monks gain mobility that meshes well with the 5-foot step, letting you reposition while maintaining pressure. Battle Masters can use maneuvers to control the battlefield before capitalizing on the opportunity attack you secure. Rangers, especially those focusing on the Hunter archetype, can use the spear for both reach and ranged options. Even some paladin builds, particularly Oath of Devotion or Oath of the Ancients, can justify the feat if they value holding a corridor. For all of these, you will usually want Strength for damage and Dexterity for AC and initiative, meeting the 13/13 prerequisites without compromising your primary stat progression.
Legality, Rules As Written, and Common Misconceptions
Because the spear is labeled a reach weapon in the Player's Handbook, it is fully legal for Polearm Master without any additional rulings. A common misconception is that you provoke opportunity attacks when you move out of reach, but the feat specifically prevents that only if a hostile creature enters your reach while you do not. Another confusion is that you need a two-handed grip; in reality, the spear can be used one-handed while still benefiting from the feat, leaving your other hand free for a shield, a second weapon, or a spell component pouch. There is also no restriction on using a shield with this build, which can further boost your AC when paired with the right fighting style. Finally, the 'reach' property does not prevent opportunity attacks from your attacks; it only defines which spaces count as your reach for triggering reactions.
Tactical Tips and Encounter Optimization
In practice, treat your spear and Polearm Master as a tool for controlling key squares rather than simply dealing damage. Position near difficult terrain, doorways, or chokepoints so that enemy movement reliably triggers your reactions. Use the 5-foot move to keep your reach optimally aligned after you or an ally moves, and avoid wasting your reaction when multiple enemies enter your reach simultaneously—the feat only lets you make one opportunity attack per trigger. Coordinate with teammates so that your defensive stance covers spellcasters or vulnerable units behind you. In groups of enemies, consider moving to reduce the number of attackers who can safely stand in your threatened space. If your DM uses opportunity attack rules strictly, emphasize that you only provoke attacks of opportunity from the triggering creature, not from everyone who ends their move nearby.
How This Holds Up Over Long Campaigns
Because Polearm Master is a feat and not a class feature, its relative power scales differently than spell slots or class features that improve with level. At low and mid tiers, the control and defensive utility are excellent, often making you the default anchor for the front line. As enemies gain multiple attacks, legendary resistances, and mobility options, the feat becomes more situational, but it rarely becomes strictly worse. You can keep the feat indefinitely, and many DMs appreciate the clarity it brings to reach combat. If you multiclass, ensure your dip supports the build rather than diluting the strength of your spear attacks. For pure durability and long-term consistency, this combination remains a solid evergreen choice for control-oriented melee characters who favor spears in 5e.
Summary Checklist for Building a Polearm Master Spear Fighter
- Meet Strength 13 and Dexterity 13 prerequisites before taking the feat.
- Choose a spear or another legal reach weapon to qualify.
- Plan your Attack action to position yourself before enemies enter your reach when possible.
- Use your reaction defensively, and only for one opportunity attack when a hostile creature enters your reach.
- Coordinate with allies so you control high-value corridors and protect back-line teammates.
- Consider a sturdy shield, a second weapon for finishers, or a ranged option if your DM allows versatile spears with the thrown property.
Overall, the Polearm Master feat with a spear gives you a durable, readable, and consistently useful toolkit for controlling space in 5e. Once you understand how the reach interaction and opportunity attack rules mesh with the feat's wording, you can reliably optimize for both defense and tactical positioning, whether you are playing a stowart fighter, a monk who never wants to be caught in one place, or a battle-hardened champion who prefers to meet foes at arm's length.