Mega Meganium

Mega Sol activates instant Solar Beam regardless of weather. Solar Beam fires without a charge turn even under Rain. Solar Beam is 120 BP Grass STAB instant. Earth Power covers Steel, Fire, and Poison types that resist Grass. Dazzling Gleam hits both opponents with spread Fairy damage. Under Rain, Fire moves targeting Meganium are halved, removing its primary weakness while Mega Sol maintains full offensive capability. Modest maxed Special Attack with Speed investment creates genuine offensive threat. A Grass attacker that operates at full power even when Rain would normally make Grass moves tactically redundant.