This loop relies on Temur Sabertooth acting as a repeatable bounce engine to constantly reset Harabaz Druid, whose tapped state is entirely bypassed by returning it to hand and re-casting it. Since Harabaz Druid scales with the number of Allies you control to generate surplus mana, it easily pays for the Sabertooth's activation fee while netting extra mana with each iteration. Finally, Urabrask the Hidden ensures the engine can instantly restart the very moment Harabaz Druid hits the board by granting it haste, removing summoning sickness entirely and turning this dance into an infinite mana and storm-generating machine.