Hitting Yourself Hammer Attack

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I thought that this would add an interesting spin on hammer weapons. This could be for SOv2 or SOv3.

As everyone knows, the only weapon that has a second attack is no weapon at all.  I was thinking of a second attack for hammers that makes them more interesting. This second attack is basically hitting yourself with your hammer to launch yourself at enemies. You inflict damage on yourself, but all enemies that touch you while you're launching yourself will take damage and be inflicted with minor knockback. This attack sounds a bit overpowered, but keep in mind that you are hurting yourself to perform this attack. The attack can be slow as well if it needs further nerfing.