Basic Tri-Brigade engine to go into Bearbrumm for revolt but with Turbo Rank 2 using Kerass and another level 2 Beast.
Ronin is good for OTK, but don't end your starting board on him.
If you can't get 4 monsters in GY, I'd recommend ending on Ancient Warriors as a final effort.
Searching off of Melffy of the Forest for Melffy Puppy. With Shuraig on board, this lets you get a free destroy with Kalantosa, banish off Shuraig, and negate with Forest.
Because Joyous Melffys can attack directly, you can get free Zeus off of that.