Boomguy's recent video was showing off the Rogue ally, and I got hyped.
Seeing that her damage could be increased by dealing damage to a friendly character, I immediately thought of the hero that loves taking damage, X-23!
Rogue allows X-23 to get a very easy ready to activate again, while also gaining her stats, meaning you technically get 2 extra activations out of the interaction.

Boosting Rogue

X-23 starts out with only 1 attack, but she can use her X-23's Claws to boost that to a 3.
Normally you would use your hero and then use the claws to trigger living weapon, but with rogue you can start boosting earlier and lose no benefit.
Attack for 3, use rogue to get readied, and then attack for 3 more, but now rogue can hit for 5 which is some great consistent damage every turn.
Adding Claw Mastery to the combo brings you to a bonkers 17 damage.
Symbiote Suit has been added mainly for staying alive, but the extra 1 damage or thwart is going to be a blessing when you are technically getting 3 uses out of it each turn.

Staying alive

With Rogue damaging you, and your own cards also bringing your health down, I've tried to make it as easy to stay on high health as possible.
Momentum Shift and What Doesn't Kill Me always be able to trigger due to X-23's Claws, boosting the damage even more while staying alive.
Med Team and Dr. Sinclair will help keep the allies alive and heal for a lot when you have to flip down to alter ego.
A fun combo I realized while testing this deck is that Grim Resolve can be used in alter ego, meaning that you could decide to take 1 damage to consistently heal for 6 (7 with symbiote suit) with Dr. Sinclair, giving you a net healing of 5 (or 6).
Symbiote Suit will give X-23 more than enough health to take all the hits, while Protective Training and X-Force Recruit will keep Rogue and Honey Badger alive.
Triage will help heal up your allies a bit more, while Armor can jump in front of the villain.