In Magic, outlaws includes assassins, mercenaries, pirates, rogues, and warlocks, and there are plenty of these in Rakdos colors
Finally, we mention a faux-Sliver
It plays pirates, it attacks with pirates, and sometimes, if youre really lucky, the pirates will do things with your other pirates
That said, I'm a fan of the innovative ways they continue to expand this design space

Archway of Innovation Arena of Glory Argoth, Sanctum of Nature Ba Sing Se Barad-dr Blackcleave Cliffs Blooming Marsh Botanical Sanctum Canopy Vista Castle Ardenvale Castle Embereth Castle Garenbrig Castle Locthwain Castle Vantress Cinder Glade Clifftop Retreat Concealed Courtyard Copperline Gorge Coral Atoll Darkslick Shores Deathcap Glade Deserted Beach Dormant Volcano Dragonskull Summit Dreamroot Cascade Drowned Catacomb Dwarven Mine Everglades Fortified Beachhead Gingerbread Cabin Glacial Fortress Hall of Storm Giants Haunted Ridge Hinterland Harbor Idyllic Grange Inspiring Vantage Isolated Chapel Jungle Basin Karoo Minas Tirith Mines of Moria Monumental Henge Mystic Sanctuary Overgrown Farmland Prairie Stream Public Thoroughfare Razorverge Thicket Rivendell Rockfall Vale Rootbound Crag Seachrome Coast Shattered Sanctum Shifting Woodland Shipwreck Marsh Smoldering Marsh Spirebluff Canal Spymaster's Vault Stormcarved Coast Sulfur Falls Sundown Pass Sunken Hollow Sunpetal Grove Temple of the Dragon Queen The Shire Thran Portal Witch's Cottage Woodland Cemetery
