Template:Vision and Light
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Vision and Light
The most fundamental tasks of adventuring—noticing danger, finding hidden objects, hitting an enemy in combat, and targeting a spell, to name just a few—rely heavily on a character's ability to see. Darkness and other effects that obscure vision can prove a significant hindrance.
Cover
Obstacles can provide cover during combat, making a target more difficult to harm.
| Cover | Benefit | Granted by |
|---|---|---|
| 1/2 | +2 to AC and Dex saves | Low walls, large furniture, a narrow tree trunk, another creature, etc. |
| 3/4 | +5 to AC and Dex saves | A portcullis, an arrow slit, a thick tree trunk, etc. |
| Total | Cannot be targeted (but AoE might reach) |
Any obstacle/condition providing complete concealment. |
Obscuration
A given area might be lightly or heavily obscured.
- Lightly obscured
- An area, such as dim light, patchy fog, or moderate foliage, creatures have disadvantage on Wisdom (Perception) checks that rely on sight.
- Heavily obscured
- An area—such as darkness, opaque fog, or dense foliage—blocks vision entirely. A creature in a heavily obscured area effectively suffers from the blinded condition.
Light
The presence or absence of light in an environment creates three categories of illumination: bright light, dim light, and darkness.
- Bright light
- Lets most creatures see normally. Even gloomy days provide bright light, as do torches, lanterns, fires, and other sources of illumination within a specific radius.
- Dim light
- Also called shadows, creates a lightly obscured area. An area of dim light is usually a boundary between a source of bright light, such as a torch, and surrounding darkness. The soft light of twilight and dawn also counts as dim light. A particularly brilliant full moon might bathe the land in dim light.
- Darkness
- Creates a heavily obscured area. Characters face darkness outdoors at night (even most moonlit nights), within the confines of an unlit dungeon or a subterranean vault, or in an area of magical darkness.
Vision
Blindsight
A creature with blindsight can perceive its surroundings without relying on sight, within a specific radius. Creatures without eyes, such as oozes, and creatures with echolocation or heightened senses, such as bats and true dragons, have this sense.
Darkvison
Many creatures in the worlds of D&D, especially those that dwell underground, have darkvision. Within a specified range, a creature with darkvision can see in dim light as if it were bright light, and in darkness as if were dim light. So areas of darkness (within range) are only lightly obscured as far as that creature is concerned. However, the creature can’t discern color in darkness, only shades of gray.
Tremorsense
A creature with tremorsense can detect and pinpoint the origin of vibrations within a specific radius, provided that the creature and the source of the vibrations are in contact with the same ground or substance. Tremorsense can’t be used to detect flying or incorporeal creatures. Many burrowing creatures have this special sense.
Truesight
A creature with truesight can, out to a specific range, see in normal and magical darkness, see invisible creatures and objects, automatically detect visual illusions and succeed on saving throws against them, and perceives the original form of a shapechanger or a creature that is transformed by magic, Furthermore, the creature can see into the Ethereal Plane.
