SHADOW GATE
4CC shadow ability - once per turn target shadow ally in your hand summoned at no cost
GOLDEN GATE
4cc human ability - once per turn target human ally in your graveyard returns to play.

note : witch these abilities you cant target neutral allies . and effects can be vice verse for shadow heroes return from grave and for human from hand.. but i think this way better because shadows have gravebone etc..and maybe increase cost 5cc