This clever loop transforms Soulbright Flamekin into a mana-positive engine by leaning heavily on Agatha of the Vile Cauldron, whose passive cost-reduction lowers the Flamekin's ability activation to just a single mana. With that discount in place, you activate the Flamekin three times to net a massive surplus of red mana. Temur Sabertooth then safely bounces the Flamekin back to your hand so you can recast it, while Crossroads Candleguide steps in as a flexible mana-fixer to turn your red surplus into the green mana needed to repeat the bounce.