Glint-Horn Buccaneer

The whole engine hinges on a single word in the trigger: whenever, not each turn or up to once. Every discard is another ping, which means the discard-a-card, draw-a-card ability it carries becomes a self-fueling loop the moment you can pay the mana repeatedly. Feed it a payoff that makes discarding free (a way to loot without spending each time, or a cost-reducer on the draw half) and the 2/4 stops being a body and becomes a burn spell that fires once per card in your hand. The attacking clause is what keeps that from happening on an empty board: you have to commit it to combat, expose it, and accept that a single removal spell in response strands the loop. That restriction is doing more design work than the haste keyword suggests, since haste is really there to get the creature swinging and the loop online a full turn ahead of schedule. It reads like a slow rummaging value creature and functions like a combo finisher, and the gap between those two readings is exactly the friction between the combat-gated activation and the pip-per-discard math. The minotaur pirate flavor is incidental; what matters is that this is a discard trigger built to be abused, sitting one enabler away from lethal.