Skip to main content

Mirage Arcane

Illusion
Level: 7th-level
Casting Time: 10 minutes
Range: Sight
Duration: 10 days
Components: V, S

You make terrain in an area up to 1 mile square look, sound, smell, and even feel like some other sort of terrain. The terrain's general shape remains the same, however. Open fields or a road could be made to resemble a swamp, hill, crevasse, or some other difficult or impassable terrain. A pond can be made to seem like a grassy meadow, a precipice like a gentle slope, or a rock-strewn gully like a wide and smooth road. Similarly, you can alter the appearance of structures, or add them where none are present. The spell doesn't disguise, conceal, or add creatures. The illusion includes audible, visual, tactile, and olfactory elements, so it can turn clear ground into difficult terrain (or vice versa) or otherwise impede movement through the area. Any piece of the illusory terrain (such as a rock or stick) that is removed from the spell's area disappears immediately. Creatures with truesight can see through the illusion to the terrain's true form; however, all other elements of the illusion remain, so while the creature is aware of the illusion's presence, the creature can still physically interact with the illusion.

Spell Details

School: Illusion
Level: 7
Ritual: No
Concentration: No
Classes: Bard, Druid, Wizard
S-Tier Mirage Arcane is a game-changing battlefield control and utility spell that affects massive areas with permanent illusions, enabling creative problem-solving and tactical dominance.

Player Guide

Use Mirage Arcane before combat begins to transform terrain into advantageous layouts—convert open fields into difficult terrain that slows enemies or create false obstacles that fragment enemy formations. Combine it with ambush tactics, forcing enemies to navigate treacherous illusory terrain while your allies move freely (knowing the truth). This spell excels for siege warfare, escape scenarios, and reshaping dungeons; maintain concentration carefully since the illusion lasts 10 days with no concentration needed after casting, making it ideal for long-term area control.

DM Tips

Mirage Arcane creates illusions that fool all senses but don't physically alter terrain—creatures moving through illusory difficult terrain should still move normally unless they believe the illusion and role-play hesitation. Clarify that the spell doesn't create actual hazards (no illusory lava damage), only sensory deception; however, fear-based hesitation or tactical misnavigation can still provide the caster's intended advantage.