Kulrath Knight combos with a number of cards that deal with counters (+1/+1 or -1/-1). However, in your scenario, if the knight gets removed, all opponents creatures are now much more dangerous. Sure Spike Cannibal rectifies that (until he gets countered or removed), but now we are looking at a 3-card combo. The Aku Djinn is counter productive to the whole mechanics of this deck. This would be the making of another completely different deck.