The Great Elder Thing 2014

The Great Elder Thing lets you choose from an expanded list of spells when you learn a warlock spell. The following spells are added to the warlock spell list for you.

Great Elder Thing Expanded Spells (table)

Spell Level	Spells
1st	dissonant whispers, hideous laughter
2nd	detect thoughts, phantasmal force
3rd	clairvoyance, sending
4th	dominate beast, black tentacles
5th	dominate person, telekinesis

Beginning at 1st level, you can push your thoughts into other minds, speaking telepathically to a creature within 30 feet as long as you can see that creature. The creature must know some language to hear your projections, but it does not need to speak the same language as you.

Starting at 6th level, you can briefly react with an impossible speed. As a reaction, triggered by an enemy attack roll targeting you, you force the creature to make the roll with disadvantage. If the enemy attack ends up missing, then you gain advantage on the next attack roll you make against that creature until the end of your next turn. You can only use this feature once per short or long rest.

At 10th level, your thoughts become shielded against others. Your mind cannot be read by magic, telepathy, or other methods without your consent. You also become resistant to the psychic damage type, and if you do suffer psychic damage, you deal the same amount of psychic damage to the creature which dealt it to you.

Starting at 14th level, you gain the ability to flood a creature’s mind with the cosmic presence of your terrible patron. As an action, you can touch a humanoid that is incapacitated, causing it to be charmed by you. You can speak to this thrall telepathically as long as both of you remain on the same plane of existence. The charm has no end duration, but can be negated by a remove curse spell or another power that removes the charmed condition. You relinquish the charm the next time you use this feature.