Same as the other ability, its most likely going to be signature.
@ Snaquaza, there are many abilities that outclass another ability, such as:
Magic Guard > Overcoat
Clear Body > White Smoke/Hyper Cutter/Big Pecks/Keen Eye etc.
Speed Boost > Weak Armor
Huge Power/Pure Power > Guts/Blaze/Swarm/Torrent etc.
Flash Fire > Heatproof
Thick Fat > Heatproof
and some more I gotta thing 'bout
Anyways Positive and I hope the Pokemon this is given to is accepted.