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If a potion doesn't duplicate a spell, does it require Concentration?

Compendium - Sources->Dungeons & Dragons->Sage Advice & Errata

If a potion doesn’t duplicate a spell, does it require Concentration? A potion’s effect requires Concentration only if its description says so or if it duplicates a spell that requires Concentration.

Hunger of Hadar

Spells Player’s Handbook

You open a gateway to the Far Realm, a region infested with unspeakable horrors. A 20-foot-radius Sphere of Darkness appears, centered on a point with range and lasting for the duration. The Sphere

damage from otherworldly tentacles. Using a Higher-Level Spell Slot. The Cold or Acid damage (your choice) increases by 1d6 for each spell slot level above 3.

Clone

Spells Player’s Handbook

You touch a creature or at least 1 cubic inch of its flesh. An inert duplicate of that creature forms inside the vessel used in the spell’s casting and finishes growing after 120 days; you

Mirror Image

Spells Player’s Handbook

duplicates is hit instead of you, and the duplicate is destroyed. The duplicates otherwise ignore all other damage and effects. The spell ends when all three duplicates are destroyed. A creature is unaffected by this spell if it has the Blinded condition, Blindsight, or Truesight.

Three illusory duplicates of yourself appear in your space. Until the spell ends, the duplicates move with you and mimic your actions, shifting position so it’s impossible to track which image

Shadow Dragon (Huge)

Monsters Monster Manual

its next turn.Shadow Dragon Lairs Shadow dragons lair in places of darkness and despair, such as accursed ruins, the depths of the Underdark, or the Shadowfell. The region around a shadow dragon

’s lair is twisted by its presence, creating the following effects: Negative Energy Suffusion. Whenever a creature within 1 mile of the lair regains Hit Points from a spell, it subtracts 1d10

Shadow Dragon (Large)

Monsters Monster Manual

its next turn.Shadow Dragon Lairs Shadow dragons lair in places of darkness and despair, such as accursed ruins, the depths of the Underdark, or the Shadowfell. The region around a shadow dragon

’s lair is twisted by its presence, creating the following effects: Negative Energy Suffusion. Whenever a creature within 1 mile of the lair regains Hit Points from a spell, it subtracts 1d10

Arch-hag

Monsters Monster Manual

Coven Magic. While within 30 feet of at least two hag allies, the hag can cast one of the following spells, requiring no Material components, using the spell’s normal casting time, and using

Intelligence as the spellcasting ability (spell save DC 19): Augury, Find Familiar, Identify,Locate Object, Scrying, or Unseen Servant. The hag must finish a Long Rest before using this trait to cast

Dracolich

Monsters Monster Manual

spellcasting ability (spell save DC 19, +11;{"diceNotation":"1d20+11", "rollType":"to hit", "rollAction":"Spellcasting"} to hit with spell attacks): At Will: Detect Magic, Ray of Sickness (level 2

turn.Dracolich Lairs A dracolich lurks in a corrupted version of the lair it had in life. The region containing a dracolich’s lair is warped by its presence, creating the following effects: Sapping Mist

Wish

Spells Player’s Handbook

Wish is the mightiest spell a mortal can cast. By simply speaking aloud, you can alter reality itself. The basic use of this spell is to duplicate any other spell of level 8 or lower. If you use it

this way, you don’t need to meet any requirements to cast that spell, including costly components. The spell simply takes effect. Alternatively, you can create one of the following effects of

Demilich

Monsters Monster Manual

its Hit Points in 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Undead Restoration"} days unless a Wish spell is cast on its remains.Multiattack. The demilich makes three Necrotic Burst

jealously guard their deathtrap-laden sanctums. The most notorious of these is the Tomb of Horrors, lair of the infamous Acererak. The region containing a demilich’s lair is twisted by its

Vampire Umbral Lord

Monsters Monster Manual

":"recharge", "rollAction":"Hunger of Hadar"}. The vampire casts Hunger of Hadar (level 5 version), requiring no spell components and using Charisma as the spellcasting ability (spell save DC 18).Legendary

of its turns. Beguile. The vampire casts Command, requiring no spell components and using Charisma as the spellcasting ability (spell save DC 18). The vampire can’t take this action again until

Dracolich (Gargantuan)

Monsters Monster Manual

the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 19, +11;{"diceNotation":"1d20+11", "rollType":"to hit", "rollAction":"Spellcasting

"} to hit with spell attacks): At Will: Detect Magic, Ray of Sickness (level 2 version)1/Day Each: Create Undead (level 8 version), Finger of DeathLegendary Action Uses: 3 (4 in Lair

Beholder

Monsters Monster Manual

in the Underdark or in lairs created for them by their servants. The region containing a beholder’s lair is twisted by its presence, creating the following effects: Scopophobia. Creatures

150-foot Cone. Until the start of the beholder’s next turn, that area acts as an Antimagic Field spell, and that area works against the beholder’s own Eye Rays.

Death Tyrant

Monsters Monster Manual

region containing a death tyrant’s lair is warped by its presence, creating the following effects: Negative Energy Suffusion. Whenever a creature within 1 mile of the lair regains Hit Points from

a spell, it subtracts 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Negative energy suffusion"} from the number of Hit Points regained. Scopophobia. Creatures within 1 mile of the

Gremishka (DMR)

Monsters Dungeon Masters: Ravenloft Play-Along Pack

destructive menaces delight in tormenting spellcasters and seek to destroy anything associated with them, particularly spellbooks, spell components, and familiars. If exposed to magic, a lone gremishka explodes into a destructive Swarm of Gremishkas (DMR);swarm of duplicate gremishkas.

", "rollType":"damage", "rollAction":"Bite", "rollDamageType":"Force"} Force damage.Magic Allergy (Individual Form Only; 1/Day). Trigger: A creature within 30 feet of the gremishka casts a spell

Swarm of Gremishkas (DMR)

Monsters Dungeon Masters: Ravenloft Play-Along Pack

anything associated with them, particularly spellbooks, spell components, and familiars. If exposed to magic, a lone gremishka explodes into a destructive swarm of duplicate gremishkas.Bludgeoning, Piercing, Slashing

Ancient Spirit Dragon