When you cast a Warlock spell that deals damage, you can change its damage type to Psychic. In addition, when you cast a Warlock spell that is an Enchantment or Illusion, you can do so without Verbal or Somatic components.
Psychic Spells
Raw data
{
"name": "Psychic Spells",
"page": 163,
"level": 3,
"__prop": "subclassFeature",
"header": 1,
"source": "XPHB",
"entries": [
"When you cast a Warlock spell that deals damage, you can change its damage type to Psychic. In addition, when you cast a Warlock spell that is an {@filter Enchantment|spells|class=Warlock|school=E} or {@filter Illusion|spells|class=Warlock|school=I}, you can do so without Verbal or Somatic components."
],
"className": "Warlock",
"classSource": "XPHB",
"subclassSource": "XPHB",
"subclassShortName": "Great Old One"
}