Voting time! Have been extremely busy this week and forgot to update this, sorry!
Blastoise: Regenerator -> Magic Bounce
Mega Venusaur: Adaptability
Mega Charizard X: Levitate
Mega Charizard Y: Flash Fire
Blastoise: Regenerator -> Intimidate
Venusaur: Intimidate -> Mold Breaker
Charizard: Defiant -> Levitate (X) or Sheer Force (Y)
Blastoise: Intimidate -> Rough Skin
Venusaur: Magic Bounce -> Adaptability
Charizard: Frisk -> Levitate (X) / Pixilate (Y)
Vote like this, you can put reason after the votes if you want:Blastoise: MagicGuard -> MultiScale
guaranteed multiscale once, magic guard helps with switching in and out
Venusaur: Regenerator -> Shear force
staying non mega-d with out passive recovery can be a problem, shearforce helps with special power.
Charizard: Regenerator -> Levitate (X)/ Pixilate (Y)
regenerator helps with passive damage from mind games. levitate is obvious, Pixilate will give Y decent power while preventing it's coverage from boosting.