Kobold Monk didn't see any play and it was more durable. I know, that the gnome's battlecry effect makes sure you are untargetable even if the minion dies (which wasn't the case with the kobold), but still. For me it's a tech card, which is useful in fringe cases.
Kobold Monk is much more better than this minion and it saw no play. I am safe to say that this minion will see no play either. I hate to be so grim but I love Kobold Monk's concept but it was just easily dealt with. The effect is ultimately isn't strong enough to be a factor.
I was torn between Bad and Playable (looking at the perspective of tech card)
This does offer some minor disruption against Combo decks, but only certain combo decks. Out of decks that may exist after the rotation, this will only stop Malygos and that meme Shirvallah + Holy Wrath deck. This won't stop Mechathun or any combos dealing with charge minions like Leeroy.
I don't know about all the decks in wild, but the only other deck this can stop that I can think of is Exodia Mage.
The only other use I can think of for this card is maybe as a Time Out lite for non-Paladin combo decks. As long as your opponent doesn't already have lethal on board (or from charge minions or non-targeted damage) you might gain yourself another turn to get the last piece of your combo. But even in that case it feels kind of weak to me.