General idea is that you spend the entire game farming the enemy teams jungle. your value wont show on the scoreboard but it will show up in the soul difference. General idea is that you are unkillable because if they jump you you can door out, cart them away, or ult them. ez infinite farming with crushing fists, bells, and lifestrike you take almost no damage. sell cultist when absolutely needed (same with opening rounds) the main advantage of cultist is the damage resist to jungle creeps. once you have a substantial lead you build into bell spam and you start nuking teamfights.
Recommended ability leveling order for this build