MTG help please I really need help?

1-2 of each card just isnt going to cut it. You need to have 3-4 of each card to make the deck competitive. Reaper King is really bad in this deck and should be removed. What is the point of using Rite of Replication? You have no Precursor Golem to use with it so basically a dead draw for you. Not a good deck at all.