Endless Evil

The 1/1 clause is what makes this aura interesting: because every copy comes in shrunken to a single point of toughness, the effect stops caring about the host's body and copies only what actually matters, the abilities and the enter-the-battlefield triggers. Attach it to a creature whose value lives in stepping onto the battlefield rather than swinging, and each upkeep hands you a fresh trigger with a disposable frame around it. That approach borrows from the clone tradition (the token-copy work of Sakashima the Impostor and its relatives) but arrives from the enchantment side, which shifts its resilience: removal aimed at the tokens does nothing to the engine, and the copies keep coming as long as the enchanted creature survives. The Horror recursion is a flavor-forward safety valve, bouncing the aura back only when its host was a Horror, which quietly rewards Horror-tribal shells where losing the enchanted creature does not cost you the enchantment. Outside that narrow condition it inherits the fragility of every Aura: kill the host and the whole apparatus follows it to the graveyard. What it buys in exchange for that risk is repetition a one-shot clone cannot match, a copy every turn rather than a copy once, at the price of an enchantment instead of a creature spell.