You play the biggest creatures you can, all the way up the curve and you attack with them
Mass enchantment reanimation like Replenish, Open the Vault or Renewed Faith, cost-altering enchantments like Omniscience, Dream Halls or One with the Multiverse, and one-off freecasting effects like Academy Rector, Lost Auramancers, or Show and Tell each have their strengths wed like to play all of them
Here's an innovative take on Zombies that Fnoop used to go undefeated in a Competitive Standard League on Magic Online
We are now pretty comfortably at the point where there are enough graveyard synergies on the go that all decks will make some use of them and those that fail to do so are wasting resources
Kamahl's Will works in a cinch, but well mostly be looking to use it as creature removal, since our lands are typically stronger with Tatyova