This is just my opinion but splashes of red and/or prophets would work at speeding the deck up. For prophets the addition of Samuel green david and isaiah seem like natural additions character wise. Sam let's you grab your david or purple Saul and band which still would fit your deck well. Sam also can band to Ahimelek. AUTO becomes a consideration for speed then as well. The green david can use I wanna say royal parade and unified kingdom in purple?? Green david also has access to Bravery of David and david's triumph in red if you want to go a more red route. Isaiah is one I really like for the deck since he protects purple kings just have to get him banded in. King Hezzy is the king I believe that bands him in with his ability. I saw Ahimelek in the deck and red pairs well with the deck as well. If you wanted to go that route I'd recommend Asahel red david and maybe Uriah or Ishmaiah. The red Canaanites make foreign sword amazing for this deck which pairs really well with Phillies. Other than that Bravery of David, david's triumph and ASP make for a really potent enhancement combo for the deck. If you're looking for pure speed help prophets is better. Wwaw, AUTO, Sam and provisions are the main reason I say that. Also I noticed no temple dedication. Could be a nice option for ya. Just my suggestions to explore there is alot of interconnectivity with the cards here just gotta find what you like best and try to fit that within your proffered deck size. Hope I helped some.