StyleStarburst, Scatter Bubbles, Ray Bubbles or Siemens Star
Aura colourAuto (the face fill), TC1 / TC2 / Black / White, or a document spot
Alternateon/off, every other ray or bubble in a second colour of your choice
Unpaint aura shapeon/off, the aura is cut out of the object below instead of painted
Use shape belowon/off, default on: the aura fills the object behind the word; off, it fills a margin around the word
Margin0–1500 em‰, default 300: how far the aura reaches when there is no shape below
Rounding0–600 em‰, default 60: the corners of that margin
Round cornerson/off with Corners 0–100%, softens the aura shape
Text fit0–100%, default 70: how closely the rays hug the letters
Rays1–200, default 36, for Starburst and Siemens Star
Spacing1–99%, default 42: each ray's width as a share of its period
Waveon/off, with Ridges 1–20 (default 3) and Ridge size 0–100% (default 40): wavy rays
Twirlon/off with Angle −180 to 180°, default 45: the rays spiral
Bubble shapeCircle, Star, Square or Triangle, for the two bubble styles
Rays (bubbles)1–120, default 16, for Ray Bubbles
Density25–400%, default 100, for Scatter Bubbles
Size at word / at edge0–400 em‰ each, defaults 120 and 50: bubbles shrink or grow toward the edge
Opacity at word / at edge0–100% each: bubbles fade toward the edge
Gap at word / at edge0–250 em‰, defaults 60 and 160, for Scatter Bubbles
Rearrangea new seed, another scatter of the same settings
Still live text
Aura is applied as an Illustrator live effect, so the text stays editable. Change the word, the font, or any slider afterwards, and save the result as a Graphic Style to reuse it.