Line Shadow Text

A word is duplicated into many stacked copies that shift with scroll.

Add a "Text Repetition" effect (also called repeated text scroll) to [where].
A word should be copied into a stack of fainter outline copies that spread out from behind it as the user scrolls, and fold back together when scrolling up.
Tie the spread directly to the scroll position, and hide the extra copies from screen readers so the word is read only once.

Text jitters with sliced offsets and red/cyan colour splits like a broken signal.

Add a "Glitch Text" hover effect (also called text glitch or RGB split glitch) to [where].
While the pointer is over the text, it should jitter in quick, snappy bursts: thin horizontal slices jump sideways and two colored copies split apart like a broken signal, then settle back when the pointer leaves.
Keep the real text in the document only once so screen readers don't read the copies, and show the same effect on keyboard focus.

Letters fill with a rising, waving liquid.

Add a "Liquid Fill Text" effect (also called water fill text) to [where].
The outlined letters should fill with liquid whose wavy surface rolls sideways while the level slowly rises and falls, in a soft, continuous loop.
Keep the word available as real text for screen readers, and hold the liquid at a still level for users who prefer reduced motion.

Text slides up from behind a clipping line so it looks like it emerges from nowhere.

Add a "Mask Reveal" text entrance (also called line mask reveal or text masking) to [where].
Each line should slide up from behind an invisible edge so it seems to emerge from nowhere, one line after another, quick and smooth without bounce.
Play it once when the text scrolls into view, and show the text right away without motion for users who prefer reduced motion.

Green characters fall in columns like the Matrix code rain.

Add a "Matrix Text" effect (also called digital rain text) to [where].
Columns of characters should fall steadily at slightly different speeds, each with a bright leading character and a tail that fades out behind it.
Treat it as decoration hidden from screen readers, keep it lightweight, and stop it for users who prefer reduced motion.