Switch Arnie out for Bryan. He's not actually able to fork with anyone other than Pilzken. Usually Bryan is gonna be a stronger choice because SoA is too good, but it also depends on what everyone else is using that week.
Eh, I'm gonna cast my vote for Arnie. The best thing about SoA is it makes people go 'eeeeh,' but Bryan packs 7 damage and not many people are gonna just let him through. So you're going to take a 4* card with 7 base power and try to shove him down the throat of another card... almost any of which will be beating him pill for pill. Or you could bluff... but isn't Arnie better for bluffing? Or you could try a 4 pill... in which case I think Wyre is the card you're looking for.