WIP - Many more viable sets can be listed. Could use a lot more information.
ElisType:
Dark/WindAbilities:
PressureBase Stats:HP: 70
Atk: 100
Def: 70
Spd: 100
SpAtk: 140
SpDef: 70
OverveiwElis is a rather obscure puppet, but boy does she have some great stats. Take a Beautiful 140 Special attack, add a decent 100 Attack and Speed, and top it off with a typing that complements both, and Elis will usually be sure to cause some damage before falling to a Steel, Faith, or Earth Type.
Special Speeder-Thunder Bolt
-Dark Pulse/Hyper Beam
-Shadow Ball
-SonicBoom
Nature: Timid (+Spe, -Atk)
Item: Lum Berry
Ability: Pressure
EVs: 252 SpA/252 Spd/6 HP
Elis gets to show off that 140 Special Attack as it blasts most things to bits. Thunderbolt and Dark pulse get a nice boost from STAB, and the latter also has a chance of Flinching. Shadow Ball Scares off Reason Types and hits any ghosts who try to swap in on a Dark Pulse, and Sonicboom kills any Ayas that could take a T-bolt. If you're feeling lucky, you can use Hyper Beam instead and watch everything be obliterated if it hits.
Mixing it up-Thunderbolt
-Thrash
-Dark Pulse
-Psycho Cut
Nature: Naughty (+Atk, -SpDef)
Item: Salac Berry
Ability: Pressure
EVs: 252 Atk/252 SpA/6 Spd
Elis can make use great use of both Attack and Special Attack here. Thrash is a great STAB move to have with its 100 BP, and Psycho cut, while weak, lessens the threat of faith types.
Other OptionsHeart Break is usable, but it's lack of a special effect can be daunting. Outrage is another, better option, since it packs a whopping 120 BP. Thunder wave is also a thing if Elis comes up on something faster than her.
CountersAs said Earlier, Faith, Steel, and Earth types are Bad for Elis. ASuwako and Sendai are notable ones, due to their commonness and STAB off of two of those types. SYoumu is also a problem due to it's 120 Speed, but Shadow Ball can take one out if she survives with her pitiful all 70 bulk.