Does z-memento heal status? Cause if it doesn't heal status i would say z-parting shot is a better option
It heals status on PS.
Seamus Eso
Landorus-I CM still invalidates stall even without Z-Memento, I was just using an example of how mindless and easy it was to pair it with z-memento. Landorus is a pokemon with solid bulk, a pretty good speed tier, and great versatility with rock Polish for offense calm mind for stall and uturn / rocks slide / stealth rock / knock off / etc amazing movepool coverage for literally anything else. Mega Latias and Cresselia are absent, and many more things were introduced that are simply destroyed by Landorus. no one is denying that landorus isn't broken or that it doesn't have its flaws but it is stupidly good at what it does. the ou council highlighted all of this in their explanation in their reason to ban Landorus.
EDIT:
Landorus is a lot like Pheromosa in a sense.
Pheromosa has a plethora of counters in the form of Toxapex, Tapu Bulu (to some extent), Marowak, Mantine, etc. that allow fatter teams to not struggle against it so much. However, its easily spammable U-Turn allows it to pressure any of its would-be counters, its movepool is just ridiculous enough to cover just the right threats (if it didn't have Ice Beam / Poison Jab it might not be so ridiculous, seeing as how Land-T Tapu Fini etc. could potentially wall it), and it can play with either LO or Scarf. Beast Boost can make LO immune to Scarf Revenge killing, which is one of the things that really pushes it for me. Scarf is the most reliable way for offense teams to revenge kills since Psychic Terrain & Gale Wings nerf really hurt priority this generation.
Pheromosa can be OK against fat teams, but its the ability to invalidate offense that really makes it ban-worthy.
It is the same regard for Landorus: it is OK against offense teams, its stellar bulk, U-Turn, sizeable movepool, access to Rocks make it a decent mon vs offensive teams, but its ability to invalidate stall and fat teams is what makes it ban-worthy.
(You mention Bulu as a counter, but it gets Sludge Wave; Celesteela as a counter, but +1 FB can 2HKO, plus it gets access to Gravity, etc. etc. -- sure it has 4MMS, but the fact that it is so versatile puts the favor on the Landorus's side and forces the balance / stall user to run 2-3 things specifically for one pokemon because of its *potential* sets... I don't think it creates skill when it puts that much pressure on the teambuilding process.
Ugh I could keep going on, but tl;tr Landorus was going to get banned eventually, and I respect the OU Council's decision to ban it now.)