Ah, behold the beautiful synergy of cost reduction and blinking! With Agatha of the Vile Cauldron on the board boosting her own power to four, the activation cost of Emiel the Blessed's blink ability is slashed down from three mana to a mere single mana. When you feed that cycle by repeatedly blinking Kalain, Reclusive Painter, her entrance triggers flood the battlefield with a steady stream of Treasure tokens. By tapping and sacrificing each newly minted Treasure to pay for the next activation, the loop becomes self-sustaining and completely infinite—allowing Kalain to dance in and out of exile endlessly for a limitless cascade of leaves-the-battlefield and enters-the-battlefield triggers.