The basilisk in D&D 5e draws inspiration from classic myth and earns its place as one of the most intimidating creatures in the game. Understanding its traits, tactics, and place in the bestiary helps both players and DMs integrate this legendary serpent into their campaigns.
Below is a quick reference table that highlights how the official basilisk compares to similar monsters across key game dimensions such as size, challenge rating, resistances, and signature abilities.
| Creature | Challenge Rating | Primary Traits | Legendary Actions |
|---|---|---|---|
| Basilisk | 13 (10,000 XP) | Petrifying Gaze, Turn to Stone | 3 per round, including Move and Attack |
| Young Green Dragon | 13 (10,000 XP) | Breath Weapon, Frightful Presence | 2 per round, including Dodge and Attack |
| Animated Statue | 10 (5,900 XP) | Magic Immunity, Stone Gaze Variant | None |
| Medusa | 6 (2,300 XP) | Petrifying Gaze, Magic Resistance | 3 per round, including Attack |
Basilisk Stat Block and Mechanics
Creature Statistics and Actions
The basilisk has an Armor Class of 13, a hit point total in the high 80s, and a speed that lets it slither across land and swim through underground water. Its multiattack routine often combines a bite with a single tail strike, applying crushing damage alongside its petrifying features. On initiative, the creature uses its legendary actions to Move and Strike, making it dangerous even on enemy turns when the party is attempting to reposition or ready actions.
Senses, Perception, and Environment
Darkvision gives the basilisk strong vision in underground settings, while its passive Perception keeps it alerted to stealthy approaches. Favored habitats include deep caves, forgotten crypts, and abandoned temples where stone surfaces provide both cover and a stage for its petrifying gaze. The creature typically stalks from ambush, using line of sight and tight corridors to maximize the effectiveness of its gaze attacks.
Tactics and Encounter Design
Using Petrifying Gaze in Combat
Basilisk encounters reward tactical positioning, since enemies that break line of sight or force movement can reduce the effectiveness of its gaze. Spellcasters with protection from petrification, blink spells, or reliable cover often become pivotal in these fights. DMs can stage the basilisk as the centerpiece of a chained encounter, where surviving its initial gaze leads into combat with summoned beasts or territorial rivals.
Challenge Rating and Party Scaling
A party of four mid-level adventurers typically faces a fair challenge against a basilisk when it appears as a solo encounter. Adding allies, such as awakened statues or a medusa ally, can raise the difficulty without feeling overwhelmingly punishing. Tracking actions per round and legendary action usage helps the DM balance turns so that players can react, counter, and still feel the threat of petrification.
Lore and World Integration
Mythic Roots and Campaign Hooks
Classical tales describe the basilisk as a serpent born from a cursed egg, and D&D 5e echoes this by presenting the creature as an ancient, almost primordial horror. A basilisk may serve as a guardian of buried secrets, its petrifying stare tied to a curse that protects a vault or a fallen kingdom. Players might pursue a quest to destroy or contain a basilisk, bargain with a covetous dragon, or recover an artifact that can neutralize its gaze permanently.
Best Practices and Takeaways
- Use line of sight and corridors to maximize the basilisk's control of the battlefield.
- Give players multiple ways to counter petrification, such as magic items, spells, or environmental hazards.
- Consider legendary actions and reactions to make each round feel dynamic and threatening.
- Tie the basilisk's presence to clear story stakes, such as guarding a cursed artifact or ancient burial site.
- Adjust encounter composition and positioning to keep the fight challenging but fair for the party.
FAQ
Reader questions
How does the basilisk's gaze attack work in practice?
When a creature starts its turn within 30 feet of the basilisk and can see it, the target must succeed on a Constitution saving throw or begin to turn to stone. The effect continues at the start of each of the target's turns until the creature dies or the effect is removed by magic such as Lesser Restoration or Heal.
Can a basilisk's petrification be cured with standard spells?
Yes, effects like Lesser Restoration, Remove Curse, or Heal can end the petrification condition, and a successful DC 15 Medicine check can halt the petrification if administered before the creature completely turns to stone.
What happens if a basilisk is fighting in tight corridors or underground tunnels?
In narrow passages, the basilisk often gains an advantage, since it can force enemies into single-file movement and maintain line of sight for its gaze. Careful use of area effects, cover, and spells that grant resistance or immunity to petrification can help the party survive these cramped battlegrounds.
How should DMs adjust the basilisk for higher level parties?
For higher level groups, you can increase the encounter difficulty by adding legendary actions, giving the basilisk legendary resistance, or pairing it with creatures that protect its line of sight, while avoiding raw stat inflation that would trivialize the challenge rating system.