This clever loop turns a simple temporary clone into an engine for infinite copies by exploiting the way creature types and token generation interact. When you cast Heat Shimmer targeting Restoration Angel, the resulting token enters the battlefield and its triggered ability blinks a creature with power 4 or greater, which in turn triggers Life Finds a Way. Because Life Finds a Way triggers off of that entering creature and creates a copy of the Restoration Angel token, each cycle generates a brand-new Angel token that repeats the entire process. This lets you endlessly repeat the blink, leave-the-battlefield, and entry triggers to flood the board with as many token copies as you desire.