Every ability

Speed Boost

This Pokémon's Speed is raised 1 stage at the end of each full turn on the field.

Standard ability
3
Pokémon
Hidden ability
10
Pokémon
Only in battle
1
Pokémon

In detail

This Pokémon's Speed is raised by 1 stage at the end of each full turn it has been on the field.

Pokémon that can have it

13

Standard ability3Any one caught or hatched may have it

Hidden ability10Only one with its hidden ability has it

Only in battle1A forme it takes mid-battle, like a Mega Evolution