A forcecage spell created an immovable, invisible prison composed of pure force, similar to a wall of force. It could take one of two forms, as chosen by the caster. The first was a barred cage, a 20-foot-wide (6.1 meters) cube made of 0.5-inch-wide (1.3 centimeters) bars the same distance apart. The other was a windowless cell, only 10 feet wide (3 meters) but lacking any gaps or exits. A forcecage could also be a rather ornate, round "birdcage"-like structure, with visible bars.
Any creature within the affected area at the time of casting was trapped inside, unless they were too large (in which case the spell failed), or they could pass through the slits in the barred cage. It was also possible to escape with teleportation spells or astral travel, though the force blocked ethereal travel.
A captive could still use spells or breath weapons through the barred cage, and weapons could potentially fit through.
The forcecage was immune to dispel magic, but it could be destroyed with disintegrate, or with a sphere of annihilation or a rod of cancellation. It usually lasted a matter of hours, according to the power of the caster, unless dismissed ahead of time. However, a forcecage could also fade with the death of its caster.
In the Year of the Prince, 1357 DR, the extraplanar magic-user Imgig Zu placed his captive Cybriana inside an ornate forcecage during his Great Awakening of his bound people. Trapped inside, Cybriana was unable to stop him, but was able to use a simple bloom spell, scattering flowers outside to form a trail for her friends. The forcecage faded with Imgig's death, allowing her to escape.
- ↑ 1.0 1.1 1.2 1.3 slade, James Butler (November 1996). Netheril: Empire of Magic (The Winds of Netheril). (TSR, Inc.), p. 25. ISBN 0-7869-0437-2.
- ↑ Mike Mearls, Jeremy Crawford (2014). Player's Handbook 5th edition. (Wizards of the Coast), pp. 207, 210–211, 243–244. ISBN 978-0-7869-6560-1.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 Jonathan Tweet, Monte Cook, Skip Williams (July 2003). Player's Handbook v.3.5. (Wizards of the Coast), p. 233. ISBN 0-7869-2886-7.
- ↑ David "Zeb" Cook (August 1989). Player's Handbook (2nd edition). (TSR, Inc.), p. 184. ISBN 0-88038-716-5.
- ↑ 5.0 5.1 slade, James Butler (November 1996). Netheril: Empire of Magic (The Winds of Netheril). (TSR, Inc.), p. 121. ISBN 0-7869-0437-2.
- ↑ 6.0 6.1 Jeff Grubb and Ed Greenwood (1990). Forgotten Realms Adventures. (TSR, Inc), pp. 149, 151, 153. ISBN 0-8803-8828-5.
- ↑ Dale Donovan (January 1998). Cult of the Dragon. (TSR, Inc), pp. 125–126. ISBN 0-7869-0709-6.
- ↑ Jeff Grubb and Andria Hayday (April 1992). Arabian Adventures. (TSR, Inc), p. 153. ISBN 978-1560763581.
- ↑ slade, James Butler (November 1996). Netheril: Empire of Magic (The Winds of Netheril). (TSR, Inc.), p. 121. ISBN 0-7869-0437-2.
- ↑ 10.0 10.1 10.2 Michael Fleisher (March 1989). “Sorcerer's Moon”. Advanced Dungeons & Dragons #4 (DC Comics), pp. 5, 12, 18.
- ↑ slade, James Butler (November 1996). Netheril: Empire of Magic (The Winds of Netheril). (TSR, Inc.), p. 27. ISBN 0-7869-0437-2.
- ↑ Dan Mishkin (August 1990). “Lunatics”. In Elliot S. Maggin ed. Advanced Dungeons & Dragons #21 (DC Comics), pp. 19–22.