This clever loop starts by feeding Horde Ambusher to Thermopod, whose sacrifice ability turns that death into red mana. The moment Horde Ambusher hits the graveyard, Missy steps in with her first ability to immediately return it to the battlefield face down as a 2/2 Cyberman artifact creature. Because it's back on the battlefield, you can use Horde Ambusher's own morph ability to turn it face up again by revealing a red card from your hand, resetting it so it can be sacrificed to Thermopod all over again. By cycling the Ambusher through this graveyard-and-morph dance, you generate an endless stream of sacrifice triggers, creature entries, and red mana to fuel the rest of your strategy.