if you want a ritual deck than you need cards that combo with a ritual deck if you want it to be at least semi-competitive. you can even do something like, Dark necro, with the normal fiend monsters (whiptail crow x3, man eating treasure chest or ryu kishin powered x3, maybe 1 sphere kuriboh if you have one or throw windstorm of etaqua in to sub SK works better with necrofear, use order to charge
for your normal monsters because it works like a more versatile michizure and can't be negated by trap jammer obviously, and cards like twister again obviously :p so the rest is up to you, trial and error. test decks on casual because the opponents i face on casual seem to be better seomtimes than ones i face on ranked
order and order will help you get fiend monsters to grave for necro, maybe staple in riryoku and-or metalmorph or even keep those really good traps taht you already have that power up your monster +1500! just watch out for mirror wall with trap jam or twister, unfortunately there doesnt seem to be anything to against those annoying kurboh's though. :( smh
oh and DUH i almost forgot, enemy controller too and you don't have to pay for that one. I'm very anti-p2w lol. Nothing is more annoying than someone with 3 sphere kuriboh's and Mirror wall.