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Evard's Black Tentacles
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Description
Tentacles sprout from the ground, turning the area into
, attacking and 
creatures within.Properties
- Cost
Action + 
Level 4 Spell Slot
- Damage: 3~18
- Details
STR Save
Range: 18 m / 60 ft
AoE: 6 m / 20 ft (Radius)- Creates Area: Black Tentacles
At higher levels
Casting this spell at a higher level grants no additional benefit.
Technical details
UIDTarget_BlackTentacles
Spell flagsArea: Black Tentacles
Black Tentacles 
Duration: 10 turns
AoE: 6 m / 20 ft (Radius)
Squirming, ebony tentacles fill the area, turning it into , and dealing 3~18
damage to all creatures entering it and them.
Type: Surface
Condition: Black Tentacles
Spell save DC Strength saving throw
- Restrained by dark tendrils. Affected entity can't move and takes 3d6Bludgeoning damage per turn.
- Attack Rolls against the affected entity have
Advantage, while the entity's Attack Rolls and Dexterity Saving Throws have 
Disadvantage
Condition: Difficult Terrain
- Movement Speed halved
How to learn
Classes:
- Class level 7: Wizard, and The Great Old One
Granted by items:
Strange Tendril Amulet (
Recharge: Long rest)
Other ways to learn:
- Wizards with
Level 4 Spell Slots can scribe a 
Scroll of Evard's Black Tentacles to their spellbooks.
Notes
condition has two possible effects: it can prevent a character from moving, and it can deal damage.- There is a saving throw for restraining, and restraining may happen
- when the spell is cast
- at the beginning of a character's turn
- when re-entering the area.
- Damage is dealt only at the beginning of the turn when a character fails the save and also had the condition before the turn.
- An affected character seems to lose all movement speed, but actually the duration of this condition is only applied whilst on its surface; this means that movement speed is returned if the character escapes the surface, for example by using
. As a comparison, 
has duration of 1, so escaping the webbed surface does not return the movement speed. - If a character is dealt damage by a weapon (at least, spells and fists do not appear to have this effect) earlier in the same round, it is not affected when the spell is cast. However, if later in the same turn such a character moves in the affected surface, they will need to make the saving throw.
