Unlisted Yoshi Moves

Ive been trying to find this on the moves list and have no idea how I did it so wondering if anyone could help me? I think I tried it with A+B but basically Yoshi cuts through the opponent in a close animation which makes it look like a counter similar to Rugis. I might not be looking hard enough though but thought I would ask since I am attempting to main Yoshi.

That's bA, you press B and then slide to A quickly.
 
Yes I forgot to mention it's on Counterhit, on NH he just pokes you with his elbow going SUP? for like 3½ damage
 
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