Prompt Rotator (Dynamic Batch)

The Prompt Rotator (Dynamic Batch) solves a stupidly common problem: you want to test five prompts against the same seed, or sweep a LoRA at three strengths, and the "easy" answer is five copy-pasted text nodes feeding five parallel samplers. This node is the easier answer. You type prompts into one node, hit "Add Prompt" a few times, and get a clean list out the back.

It comes from babydjacNODES, a personal utility pack by the solo dev who goes by babydjac on GitHub (u/Zealousideal_Can6340 on Reddit). It's not a big-name pack - it's one person's "I got tired of weak workflows" toolset - and this node is one of the genuinely useful bits.

How it works

Under the hood it's almost embarrassingly simple: the node takes a bunch of string inputs (prompt_1, prompt_2, …), collects every non-empty one, and returns them as a single STRING list, ordered by slot number. The magic is all in the frontend. A JavaScript extension hides the raw prompt_1 widget and replaces it with a scrollable stack of textareas plus an "Add Prompt" button, so you never see the plumbing - you just get a neat little prompt list editor on the canvas.

That list output is the point. Instead of five text encoders, you feed the list to whatever takes a list - a batch loop, an iterator, or a node that fans a list out into parallel sampling. Run once and everything executes.

The inputs that matter

Honestly there's one input worth touching: the Add Prompt button. Each textarea becomes a slot, empty slots are skipped, and the output order is slot order. The required prompt_1 field is technically there in the schema but the UI hides it - just use the editor.

The single output, prompts, is a STRING list. Don't try to wire it straight into a plain CLIPTextEncode - that wants one string, not a list. You need something list-aware in between, which is exactly how this node is meant to be used.

Install

ComfyUI Manager → search babydjacNODES, or:

cd ComfyUI/custom_nodes
git clone https://github.com/babydjac/babydjacNODES

Restart ComfyUI, and hard-refresh the browser - this one ships JavaScript, so a soft reload won't pick it up. No extra pip packages; the pack leans on requests/Pillow/numpy that ComfyUI already bundles.

Gotchas

• Output order is by slot number, sorted - not insertion order from the DOM. If you reorder textareas, the output order follows the slot, which can surprise you when you're doing A/B comparisons.
• Every queue run re-emits the whole list. If you only want one item at a time, the sibling No-Repeat Picker in the same pack is the better tool; this node's job is "give me everything at once."
• The pack's announcement thread on r/comfyui got a genuinely mixed reception - the top comment called the whole pack "arrogant." Take the personality with a grain of salt; the node itself works as advertised.

For A/B style tests, character consistency checks, or LoRA strength sweeps, this is the one node in the pack I'd reach for without hesitation. It removes friction without hiding anything important.