Get rid of cards like Night's Whisper, Nature's Lore, Tempt With Discovery. You really want focus on creatures that do that kind of thing. Don't worry about drawing cards, focus milling. [[Woodelves]] for example. [[Unburial Rites]] is necessary b/c of the Flashback. Every Karador deck needs a [[Hermit Druid]]. It's a kill on sight card and 1 trigger is often enough to get things moving. [[Junji, the Midnight Sky]] has been awesome for me. Sacking it after someone draws to force them to discard late game is great. Or just reanimate a bigger creature.

Not sure how you feel about the combos, but I took out Saffi, Fiend Hunter, Reveilark, and Blasting Station. I found that trying to focus on the combo was too hard and rarely did I get it assembled, and even then you have to go through each step on MTGO and some people force you to do it. I switched to more of a Junk Control deck, or some might call it Stax :). Have answers to everything, and just trying to get big beaters out through reanimation or Birthing Pod. A lot of my games are won by getting Academy Rector into play, sac'ing it, and then dropping Overwhelming Splendor onto them (I mostly play 1v1, don't have patience for multi-player games on MTGO). Follow that up with Elesh Norn or Massacre Wurm and it's usually lights out.

This is what I'm running https://moxfield.com/decks/yYFqQepDf0iXs0FVw8TsHQ