[2023] Which skill is that?

I watched the Patch video and I saw a skill that reminds me of the lightning fury from D2 - a skill that I adored back at that time.
Can you please tell me which skill (and character) that is - https://youtu.be/Oo6cLrJke6A?t=302

p.s. Please excuse me for the simple unengaging question, but I ask it because I would like to do this build as my first character for 0.9, and since many skills can look differently based on what you level in the skill tree for a new player like me it will take ages to find out on my own.