Alchemy Spellchain

Spellchain Scatter can conjure another Spellchain Scatter. This allows you to loop Spellchains as the cost of 1 mana per copy. If you can figure out a way to make these Spellchain casts gain two or more mana, then you have an concise infinite mana loop. This build takes advantage of the Spellchains triggering the ability of Displacer Kitten to blink a nonland permanent on each cast. The enchantment Stimulus Package grants 2 treasure tokens upon entering the battlefield,  so blinking on each Spellchain cast gives you infinite* mana.

The combo set up requires getting on field in any order: Stimulus Package, Micromancer, and Displacer Kitten. Micromancer grabs the first Spellchain Scatter upon entering the battlefield. Casting Spellchain allows you to blink Micromancer to get the second Spellchain. With both Spellchains accounted for, we can continually blink Stimulus Package by repeatedly casting the Spellchains. After sufficient treasure token generation, we blink Micromancer instead of Stimulus Package. This time, our target is a win condition which is fortunately a sorcery with mana value 1: Light Up the Night. You can just as equally grab Light Up the Night in the early stages of the loop to coax the opponent into conceding. With the amount of mana we have access to, we one shot the opponent\’s face with our X spell.

*While the loop is unbounded, you max around 30 treasures because of the Arena rope.