It also benefits from free artifacts or those that generate mana like Lotus Petal and Mana Vault
Evasive characters arent commonly played in Amethyst, so without an immediate removal answer Genie could stick around for 2 lore for more than 1 turn
However the Minion Reflector trigger still goes on the stack, and so copies the Last Known Information about the creature, and so it copies all 'copiable values'--specifically 'Other effects (including type-changing and text-changing effects), status, and counters are not copied.' Which means that if we sac each copy of March of the Machines, the Black Lotus tokens will enter the battlefield as non-creature artifacts
Lets compare their value: While Fervor is cheaper and on a noncreature permanent (thus making it harder to remove), Anger provides a 2/2 body that wants to be removed
If the copied creature is copying something else, then Mockingbird enters as whatever that creature copied, with the noted exceptions