Blacksoul Shinobi

Now you see me, Now you dont
At the end of a the shinobi's turn, it slinks back into the mist, disappearing (unless spotted by any means) 

Blind Assault
When the Shinobi makes an attack from the mist (Refer to "Now you see me, Now you don't" it will have disadvantage on it's attack. 

Mist Dagger
Basic weapon attack, deals 1d6+7 damage 

Flurry of blows
The shinobi lunges forwards, striking 5 times, however after doing so, it will gain 1 level of exhaustion and have it's next turn skipped

Mist Clone
The Shinobi may take 1 round to take up concentration, after the round has finished, it will summon 10 replicas of itself, the replicas cannot attack, however, they do cause mass confusion and cause anybody attacking the shinobi disadvantage on attack rolls. (Shinobi can be spotted if arcana or perception is rolled above 14)

If the shinobi is not located after 5 rounds of this ability being used, the clones will erupt and deal 1d6 necrotic damage each (Can effect the shinobi) 

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Mist Bomb
As a reaction to being attack, the shinobi may roll to dodge, if it succeeds, it will disappear into the mist, leaving a mist bomb in it's place, any creatures within 10 feet of the explosive can take any reaction against it before it explodes (Blocking, Picking it up, Kicking it, ect ect) however if the reaction fails, all creatures within 10 feet will take 2d6 necrotic damage.

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