This clever loop relies on Training Grounds to slash the cost of Emiel the Blessed's blink ability down to a single mana, making self-contained recursion suddenly affordable. By targeting Galazeth Prismari, you trigger a fresh Treasure token every time it re-enters the battlefield. Thanks to Galazeth Prismari's static ability turning every artifact you control into a mana source for instant or sorcery spells (though here we simply tap the freshly minted Treasure for general mana, or use the generated mana to fuel the next activation), you have a closed-loop engine that generates infinite creature enters-the-battlefield and leaves-the-battlefield triggers.