!tts hello
Voices:
For a list of voices, use the !voices command. Voices are used like this: !tts old: Hello, I'm the old voice. c3: And I'm the robotic voice
You can use the "randomvoice" special voice. It makes every word use a different voice. For example, !tts randomvoice: hello world how is it going

Sound effects:
For a list of sound effects, use the !sounds command. Sounds are played like this: !tts -yeet -yay

Modifiers:
-r Changes speed of all the following sounds. Valid values are 0 through 10 (For example, !tts -r5 hello world)
-n Play one or more musical notes. Valid values are 1 through 13 (For example, !tts -n1,2,3,4,5,6,7,13)
-p Pause for N milliseconds. Valid values are 100 through 5000 (For example, !tts hello -p1000 world)
-c Cut section of next sound, in milliseconds (For example, !tts -c500:1000 -yay)
-ck Same as -c, but only the cut part is played
-b Toggles playing everything in reverse (For example, !tts hello -b world -b foo)
-speak Makes every word of the message try to find an appropriate sound to be replaced by (For example, !tts -speak ass)
-rc Makes the next sound have an -rc applied to it. What would be the first argument of -rc is a random point in the sound, and the second argument is that same point + N (For example, !tts -rc500 -chad)
-poe Plays a sound hosted at https://oriath.net/Audio (For example, !tts -poehttps://oriath.net/Audio/Dialogue/Character/StrInt/Event/Tmpl_EnterCanibalBay.ogg
-up The equivalent of playing a sound effect with each possible speed, starting from the slowest (For example, !tts -upfart3)
-down Same as -up, but starting at the highest speed
-lag Toggles lag. Lag makes sounds sound "laggy". Default value is 1000, it specifies the period of samples getting silenced (For example, !tts -lag500 hello world)
-echo Same as -lag, but creates an echo effect