A replacement for Shadow Dancer

[Guilty Man]

Trying to remake a character from a campaign, a Snakebite Striker Brawler (there's a mod that adds it back) who became a Shadow dancer.

As there's no Shadow Dancer in this game, what would be a good replacement? The main things I got from Shadow dancer were the Shadow summon (essentially a permanent pet Shadow who shared some of your stats), the Shadow Jump (limited dimension door) and a little utility in having more spell like abilities, it was essentially a four level dip that gave some flavour, utility and roleplay tools.

Obviously here the qualifications for Sneak Attack are far more forgiving, so I don't need the shadow for flanking, but it was still neat. I'd really like the repositioning of Shadow Jump seeing as there's a lot of fights with very squishy backline characters. And the rest is just flavour.

Going through the available prestige classes none of them really offer my Brawler anything, so what could be some fun dips to try and get that Shadow Dancer theme/Utility back?

[Conquista]

maybe 4 levels of arcane enforcer slayer, you get a bit sneak damage and two arcane exploits, one can be armored mask for mage armor and the second dimensional slide for single target dimensional door

[MattStriker]

There's a belt in Act 3 that summons a shadow demon ally when you kill something. Might be fun for flavor (although its usefulness falls off sharply in Act 4 and beyond).