Animated Block (Spike Trap)

I had this really cool idea to make some traps, one of which is a spike trap that acts like a pressure plate and when you step on it, it produces a spike out of the middle that damages entities. However, the issue I'm finding is that I don't know how I would animate that as a block. Would I make multiple 3D models and then when event is triggered, it replaces them so it looks like movement, or would I have to like create the whole thing, have it in the world, then animate it by moving the pieces some how? I'm curious and really hope this idea can work. If not, I might have to learn more about coding.