If you don't figure out the pattern for the oscillate buff, it doesn't matter what champ you bring in, you'll still get hammered by 300% base attack every 15 seconds.
That said, you figure that out and the timing of the special attacks and with some skill you can use f'n ant man to beat her.
Power control removes a lot of headaches, my 5/50 sig 40 OG vision made short work of her and omega red, and had a longer job with uncollected versions but still successful.
I solo'd Master Emma Frost with 5* 3/45 unawakened Corvus just about every time. There are a lot of options, though, as you can see. She's definitely manageable.
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That said, you figure that out and the timing of the special attacks and with some skill you can use f'n ant man to beat her.
Power control removes a lot of headaches, my 5/50 sig 40 OG vision made short work of her and omega red, and had a longer job with uncollected versions but still successful.
But magneto if you have trouble with her "inverted controls"