Bold the ability you'd like to see as Revenankh's secondary ability. Choose only one, obviously.

Bold the attacks you want to give to Revenankh, out of the list given. Those with a majority will be added.

FYI he already learns Zen Headbutt as a tutor move

Mold Breaker
Levitate
Air Lock

Fire Punch
Shadow Claw
Stone Edge
Thunderpunch
Sucker Punch
Close Combat
Cross Chop
Will-o-Wisp

Let's see now:

Mold Breaker
Levitate
Air Lock

I think zarator has convinced me. I don't think it's necessary, but then a better ability begats a better representation of the Pokemon in a metagame, and perhaps zarator is right in saying that this is a good thing.

Fire Punch
Shadow Claw
Stone Edge
Thunderpunch
Sucker Punch
Close Combat
Cross Chop
Will-o-Wisp

Mold Breaker
Levitate
Air Lock

Fire Punch
Shadow Claw
Stone Edge
Thunderpunch
Sucker Punch
Close Combat
Cross Chop
Will-o-Wisp

Mold Breaker
Levitate
Air Lock

Fire Punch
Shadow Claw
Stone Edge
Thunderpunch
Sucker Punch
Close Combat
Cross Chop
Will-o-Wisp

I really don't see any reason to change the ability. Levitate is still inferior to Shed Skin, and Revvy still has trouble with Arghonaut with Mold Breaker.

Mold Breaker
Levitate
Air Lock

Fire Punch
Shadow Claw
Stone Edge
Thunderpunch
Sucker Punch
Close Combat
Cross Chop
Will-o-Wisp

Mold Breaker
Levitate
Air Lock

Fire Punch
Shadow Claw
Stone Edge
Thunderpunch
Sucker Punch
Close Combat
Cross Chop
Will-o-Wisp

Eh, I don't wanna make other Pokemon obsolete, so it shan't receive all moves

Mold Breaker
Levitate
Air Lock

Fire Punch
Shadow Claw
Stone Edge
Thunderpunch
Sucker Punch
Close Combat
Cross Chop
Will-o-Wisp

Mold Breaker
Levitate
Air Lock

Fire Punch
Shadow Claw
Stone Edge
Thunderpunch
Sucker Punch
Close Combat
Cross Chop
Will-o-Wisp

Mold Breaker
Levitate
Air Lock

Fire Punch
Shadow Claw
Stone Edge
Thunderpunch
Sucker Punch
Close Combat
Cross Chop
Will-o-Wisp