Dragonslayer
Deals 1.5x damage to Dragons. Takes 0.5x damage from Dragons.
4 species 3 as main 1 as innate 8 battle AI weight, −2 to 10 Ignored by Mold Breaker
In detail
Deals 1.5x damage to Dragon-type Pokemon and takes 0.5x damage when attacked by Dragon-type Pokemon. Based on attacker/defender Pokemon types, not move types. The damage reduction is multiplicative with other sources.
Types that carry it
4 species Ghost 2 Steel 2 Dragon 1 Fairy 1 Fighting 1
As a main ability
3 speciesSelectable — one of up to three, and only one is active.
As an innate
1 speciesAlways on, alongside whichever main ability is chosen.