Accually, Ultranecrozium Z is considered a mega stone in MnM. When I type "/om mnm" it says "Restricted Mega Stones - Beedrillite, Blazikenite, Kangaskhanite, Mawilite, Medichamite, Pidgeotite, Ultranecrozium Z." Since Slow Down counted, it doesn't really matter but I just wanted to point this out. Anyway, for It's Not Banned, I relized I messed up by doing Groudon Primial @ Red Orb (like I do in Ubers) instead of Groudon @ Red Orb.
(It's Not Banned):
http://replay.pokemonshowdown.com/gen7balancedhackmons-774923243
(The Struggle):
http://replay.pokemonshowdown.com/gen7balancedhackmons-774943750
That was a fun game. XD It lasted over 100 turns so
(Da Mimez):
http://replay.pokemonshowdown.com/gen7balancedhackmons-774943750
This may count for Primal too. I didn't count the weather turns but I think it was at least 30.
(Under Wraps):
http://replay.pokemonshowdown.com/gen7balancedhackmons-775350857
I did way more than 5 times and could've done it even more times. XD Anyway, he forfeited at the end but I was just gonna baton pass to a dread plate adaptability Tyranitar-Mega with power trip, sunnsteel strike, stored power, and recover so I couldn't have lost.