A simple chord stab from a sound pack for Serum gets a 100% wet reverb with the pre-delay pulled short, keeping the tail synced to the original sound.
That reverb gets recorded to a separate audio track, then layered against the original synth using sidechain compression to keep the two from clashing.
Once the reverb lives on its own track, it can be processed independently: You could use the Decimort plugin to add downsample distortion, use creative frequency-shifted delays with plugins like Echobode, or even add extra reverb. All without touching the dry synth at all.
Treating a reverb tail as its own sound design layer, rather than an effect, gives you more room to shape movement and texture than a typical send reverb allows.