>>23598864Sash Greninja with Mat Block turns Triples into easy mode and if you do it right you can get 100+ pretty easily and if you have the
autism time, 1000s.
Flying type moves can hit any spot in Triples so Talonflame is great here too.
The Pulse moves can also hit everywhere so Mega Lucario, Mega Blastoise, and Hydreigon are good choices. Mega Luke is especially good with Greninja because Mat Block can buy it a free turn to mega evolve and get a Nasty Plot off.
If you're using Greninja and Talonflame as leads then use a Lightningrod user as the center like Mega Sceptile or Mega Manectric (hold off on mega evolving).
Have something to deal with shit that's faster than Greninja (Jolteon, Electrode, Aerodactyl, Scarfers, etc). Tailwind Talonflame, Lightningrod users, and Scarf Lando-T are all good here.
Round the squad out with bulky-ish attackers with good typing like Garchomp, Dragonite, Azumarill, Scizor, Aegislash, Mega Kanga, shit like that.
Make sure 3-5 team mates have Protect. This is a multi-pokemon format, you know the fucking drill. The only one that doesn't benefit from it is Greninja.
Have fun.