Curious about what we're currently doing about bots? Check out the latest updates from staff in this thread.
Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
Make sure you can break everything, and have lots of switchins moves so you're not forced to sack stuff all the time. I like to have 1 bulky pivot usually.
Your team is extremely specially frail, everything on your team gets 2HKOd or OHKOd by Specs Dragapult which is not acceptable. Spdef Landorus and AV Melmetal would be what I'd recommend to buff up your special side a bit.
Add Defog to Kartana since you have no removal and you're very vulnerable to hazard stack. In fact, you may have to run Imprison Defog SR Uturn Lando. Looks pretty solid aside from that, but test the team and see what works and what doesn't.