JawRetreat EMax

This set takes advantage of the interaction between Jaw Lock and No Retreat, allowing you to spam No Retreat as much as you want, while also trapping the opponent, and taking advantage of Eternamax's naturally high bulk to setup more easily. Neutralizing Gas is useful for stopping Wonder Guard, Prankster, or various random abilities. Normal Tera is used to protect the user from Spectral Thief and Last Respects.

Its worth noting that the Overflow mechanic isn't in PHNN, otherwise this set would be walled by a Sp.Def Overflowed Eternamax.

-theenigmatist

Taunt and Spore are options if this set is used alongside a Shadow Tag Item Remover, but it does make Ability Shield Wonder Guard users abit trickier to handle. Shed Tail is also a good option to use alongside this set, as it not only makes setting up easier, but also blocks the effects if Freezy Frost, Sappy Seed, Spore, Knock Off, Corrosive Gas, and most importantly, OHKo moves, with the Substitute also being very hard to break due to Eternamax's high bulk.

Roar/Whirlwind, Spectral Thief if Eternamax isn't Teraed, Perish Song, Ability Shield Wonder Guards with either Magic Coat or a Shed Tail passed, OHKO Moves if Eternamax isn't behind a Sub, Stacked Passive Damage.