This charming loop turns your defenders into a self-sustaining mana engine, starting with Overgrown Battlement to tap for a flood of green mana based on your wall count. While Thousand-Year Elixir normally grants haste-like activations, its untap ability and speed-granting presence help grease the wheels, though the true engine relies on casting and bouncing. You funnel that mana into Temur Sabertooth's activation to return Overgrown Battlement safely to your hand, allowing you to recast the battlement immediately and repeat the process for infinite green mana and storm count.