Reverb
The REVERB block (moderate-mode Rack) — a true EFFECT block: audio IN → reverb → audio OUT, with NO built-in keyboard or speaker (unlike the playable shimmer-reverb RIG). Wire any block's output through it. A macro FACE — Size (tail length) / Tone (damping) / Mix (dry-wet) — shapes it from three knobs. This is the 'blocks have their own internals dependent on purpose' shape: an effect block is a processor you route through, not an instrument.