This clever loop sets up an endless engine fueled by Temur Battlecrier, whose passive cost-reduction makes casting your spells cheap enough to sustain the cycle. By casting Ashling's Command and copying it with Reiterate—while utilizing Reiterate's buyback ability to return itself to your hand—you can repeatedly trigger the command's modes. Each iteration uses the fourth mode of Ashling's Command to generate two Treasure tokens, which you immediately sacrifice for the mana needed to recast Reiterate with buyback, leaving you free to ride the other chosen modes to infinite value.