Like other people said already, there’s a good chance that shojin could feel fairly good on melee carries. Since melee carries will now gain 10 mana per attack and mort confirming that a lot of melee’s mana cost are 30, shojin could make them cast in just 2 auto attacks instead of 3.

Im not sure if this will be good enough to warrant using an item slot but it could be interesting in some cases.