This means the player must destroy Fateful Adventure first
Concepts like signaling and counterdrafting are deep and complex, but the fundamentals are relatively easy
What Godwin needed was not an adopted son, but a test subject to test the Dual Dragon, and he intended to use Jack, who was chosen as the adopted son, as a guinea pig Defeated Kiryu gives the Purgatory Dragon to Jack, but Jack returns the Purgatory Dragon to Kiryu
The green dot might look solid at a glance, but under magnification, it shows this unique pattern that is nearly impossible to mimic perfectly
That means it comes into play with three time counters on it and you remove one in each of your upkeeps, and you have to sacrifice it when it has no more counters