Is this an okay Umbreon moveset in pokemon black version?

You should teach it toxic, protect or dig, curse, toxic, and payback. You can give it leftovers if you want. Payback is a move that double its power if it get hurt before its attack. Curse increase the attack and defense stat, but decreases speed to make it more likely to attack last. Payback is a TM that you find at route 14. You could teach it a psychic move for fighting type pokemon for your umbreon to last longer.