About the Morph effect
Morph draws a single blob built from three layers: a solid core of @ characters, a ring of #, and a faint halo of colons. The core radius pulses with a sine wave, so the blob breathes as it moves. Its centre travels along a Lissajous curve, combining a horizontal sine and a slower vertical cosine, so it wanders around the middle of the screen in a looping figure that only repeats after a while. The effect feels hand-animated and playful, a little like a lava lamp or a friendly mascot. Since there is only one shape on screen, it leaves most of the canvas free for content; position text to one side and let the blob roam. Pink or amber make it warm and friendly, green turns it into a classic terminal sprite. Larger font sizes make the blob chunkier and more cartoon-like.