Changeling Outcast

Every creature type at once, and a body that guarantees a hit: that combination is what makes this a tribal enabler rather than a creature you actually want to fight with. The changeling keyword means it counts as a Goblin, an Elf, a Zombie, a Rogue, a Faerie, and whatever else a graveyard or a lord happens to care about, all from a single black one-drop. The "can't block and can't be blocked" clause is the trade that pays for that flexibility: this is a creature stripped of combat agency in one direction and handed unconditional evasion in the other. It won't hold a line, but it also can never be stonewalled, which turns it into a reliable trigger for anything that keys off connecting: ninjutsu, mill-on-damage effects, saboteur abilities. The design is deliberately one-sided. A vanilla 1/1 that dies to everything and blocks nothing would be unplayable; the same shell that reads as every tribe simultaneously and cannot be blocked becomes a chassis. Its ancestor is Universal Automaton and the older Mistform and shapeshifter lines that gave decks a type-agnostic body, but those wanted to survive combat. This one accepts that it never will, and gets paid in guaranteed connections and universal tribal membership instead. It is a purpose-built piece for graveyard and connect-triggered strategies, not a creature that expects to see the top of a curve.