There are cEDH decks that use pirate commanders but few other pirates, like most of the decks helmed by Malcolm, Keen-Eyed Navigator
If you don't cast a spell this way, investigate

3 Black Widow, Double Agent Bloodthirsty Conqueror Blooming Stinger Boggart Cursecrafter Bone-Cairn Butcher Burrog Banemaker Cackling Slasher Canyon Crawler Case of the Gorgon's Kiss Cecil, Dark Knight Cloak and Dagger, Entwined Coalstoke Gearhulk Coerced to Kill Crossbones, Malicious Mercenary Crossway Troublemakers Daggerfang Duo Dark Leo & Shredder Death Baron Deathcap Marionette Derelict Attic // Widow's Walk Derelict Attic // Widow's Walk Dissection Tools Dragon Sniper Dreadwing Scavenger Egrix the Bile Bulwark Engine Rat Entropic Battlecruiser Etrata, Deadly Fugitive Fateweaver Fear of the Dark Feral Deathgorger Flesh Burrower Frog Butler Fynn, the Fangbearer Fynn, the Fangbearer Gastal Thrillseeker Glarb, Calamity's Augur Gran Pulse Ochu Grasping Shadows Gravblade Heavy Green Goblin, Revenant Gutless Plunderer Gwenom, Remorseless Haunted Hellride Hazardroot Herbalist Horrid Vigor Hullcarver Hunter's Blowgun Huskburster Swarm Judith, Carnage Connoisseur Locke Cole Luminollusk Madame Null, Power Broker Mardu Siegebreaker Marshal of the Lost Maximum Overdrive Moonstone Harbinger Nightblade Brigade Ninja of the Hand

Incandescent Soulstoke is the premier Elemental Lord that also Sneak Attacks any Elemental
Pinnacle Monk / Mystic Peak You could make the case that Pinnacle Monk belongs in nearly every mono-red deck, plus many multicolor decks featuring red
its still a great piece of redundancy, and its cheaper to get out than the Lord of Pain