Regulation M-C comes out soon, but what is really going happen? #1 RILLABOOM First off, Rillaboom is coming. Ever since Rilla has been introduced in Gen 8 it has been a staple for competitive teams everywhere. It's hidden ability, Grassy Surge, can heal all grounded Pokemon, which makes it a great choice for most teams. Mega Charizard Y will not get boosted with Grassy surge, meaning he might go down in the ranks. Rilla can also deal a lot of damage with wood hammer or even support and attack with drum beating. Rilla also has faster fake outs than Incineroar. Even though it still is very weak to ZardY and Mega Staraptor, It is still one of the best choices. #2 MEGA HEATRAN This is where things get interesting. The first legendary to ever be teased in Champions, and I think it's a good one. It gets eruption and heat wave to destroy Kingambits, Gholdengos, and Sinistchas everywhere. (The new ZardY?!) It will be very good in TailRoom teams with a base speed stat of 67 and could dominate the meta. It's defensive typing makes it impossible to beat with 4 resistances and 5 quad resistances AND might get earth eater ability to heal upon those earthquakes from garchomps. Mega Heatran might not even be in M-C and it might have been teased for a different regulation. 3. MEGA LUCARIO Z Mega Lucario Z does have a change to be the meta. Normal Mega Lucario has Adaptability which boost it's STAB (Same type as attack bonus) - Even though it's Z mega doesn't get a huge power boost it gets a huge defense boost. It's ability - Aura Guard - makes physical attacks in Lucario Z a joke. Think of it as a buit-in Focus Sash. With its high special attack and speed trade off for low defense it can still survive most attacks and get easy knockouts with aura sphere and flash cannon. 4. MEGA ABSOL Z Mega Absol Z gets a ghost typing, meaning it is immune to fake outs. Mega Absol Z is also a powerhouse - With it's sharpness ability. Sharpness boost all slicing moves by 50% - That's a lot. It's new ghost type and Slicing ability makes it's shadow claw even better than before. Night slash is also another STAB Slicing boost move. 5. MEGA BAXCALIBUR Mega Baxcalibur is an excellent physical attacker. It's ability - Thermal Exchange - boost it's attack if hit by a fire move which can lead up to a lot of attacks boosts if fighting a ZardY. It also cannot be burned which is the whole point of mega scovillain - which keeps it's attack stat up. It also gets stab on ice shard which is good for late game sweeps and glaive rush can be a substitute for giga impact. 6. MEGA GARCHOMP Z The last one revealed! Mega Garchomp Z is trash. Don't use it. Nomal Garchomp is way better and doesn't take up a mega slot. It loses all its good physical attacks and ground STAB. It's ability is trash like why levitate?? Even normal Mega Garchomp is better than this. JUST DON'T USE IT!! Welp thanks for reading and have a good day :P