Champions exclusive: Mega Chandelure does not exist in mainline Pokémon games. This Mega was introduced in Pokémon Champions.
Screens (Reflect and Light Screen) are commonly used to halve the damage the whole team takes for five turns. Mega Chandelure’s Infiltrator ignores them entirely — it deals full damage even through screens. This makes Mega Chandelure a direct counter to screen-based defensive strategies.
At 145 base Special Attack (one of the highest in the game), Mega Chandelure’s Shadow Ball and Fire Blast deal enormous damage even against Pokémon behind screens. On offense without screens, the damage output is extreme.
Ghost/Fire offensive coverage
Ghost is super-effective against Ghost and Psychic. Fire is super-effective against Grass, Bug, Steel, and Ice. Together these two types cover most of the meta. Normal and Dark types are immune to Ghost, and Water and Rock resist Fire, but Chandelure can carry Energy Ball or Focus Blast for coverage.
Flash Fire immunity
Ghost/Fire means Mega Chandelure is immune to Normal moves (Ghost) and Fire moves (if its base form had Flash Fire — actually Chandelure’s natural ability). Infiltrator replaces all of this. Still, Ghost typing provides Normal and Fighting immunity.
What stops it
- Water and Rock — Both hit Fire for 2×. Rotom-Wash and Tyranitar are common threats.
- Ghost and Dark — Ghost hits Ghost for 2×, Dark hits Ghost for 2×. Mega Chandelure faces these with its coverage moves.
- Ground — Ground is neutral to Ghost but hits Fire for 2× (through Ghost immunity? Actually Ghost is immune to Normal and Fighting, not Ground). Earthquake is a threat.