Animating Fluid Motion

So I am trying to make VFX for a Gorr the God Butcher short (if anyone knows who that is) and I am trying to make his Necrosword so I need like a venom effect where a fluid is almost being pulled outwards. So I need to animate the fluid somehow. I have no idea how to do this but any help would be much appreciated.

hello, could you please show some pictures?

maybe use some curves and animate their Start and End frame, a bit like what I explain here then make the sword appear?

How would I make the sword appear? Is there some way to like keyframe the width of the tendril?

you could try scale, or shape keys, or switch its visibility?

Maybe this tutorials will help you.
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