This clever loop feeds on itself by turning life gain into an ever-growing threat across your battlefield. Once an initial life gain event triggers **Light of Promise**, the enchanted creature—in this case, **Scurry Oak**—grows from the resulting +1/+1 counters. That counter placement triggers **Scurry Oak**'s ability to manufacture a 1/1 Squirrel token, which in turn causes **Suture Priest** to drain your opponent and reward you with 1 life when it enters. Because that new life gain feeds straight back into **Light of Promise**, the entire chain loops indefinitely to yield an arbitrarily large creature, an endless army of tokens, and infinite life.