If I hacked a sturdy shedinja with substitute, would it:
1.Take damage from substitute?
And if so...
2.Be unstoppable due to the status effects being gone?
Even if Shedinja had the ability Sturdy, it would not protect it from substitute. However, the problem here is that if Shedinja uses substitute, it will fail. Shedinja can not make a substitute.
It will fail. Shedinja only has 1 HP and you cant have .25 HP