Personal Tutor 17 - Analogy Anthology
Often, when I get a question about how regeneration works, I start with the question, “Have you played Temple Run?”
For the sake of those unfamiliar with that game, I'll go into what I say when I get a “no” response.
“So, Temple Run is a video game for your phone where you play a guy who is running. He's just running. He's running along a path that curves, turns sharply, has drops that you have to jump over, has trees and logs and stuff in the way that you can run into and die if you're not careful… the point of the game is to run as far as you can until you mess up and die.
”Every once in a while, you can run into little icons that give you bonuses. One of the icons is a shield. When you get the shield, you get a bubble around you. While you have that bubble, if you run into a tree, or into fire, or do something else that would kill you, it kills the bubble instead, and you get to keep running. It doesn't protect you if you run off a cliff, but if you just run into a normal obstacle, you're fine.
“Regeneration works like that. When you activate your Kin-Tree Warden (or whatever; I judge a lot of Limited, so I see that guy a lot), he gets the bubble. Until the end of the turn, the bubble will protect him the first time he would die from damage or an effect that tries to specifically destroy him. If the bubble protects him, the bubble will then go away, he'll tap if he isn't already tapped, any damage that was on him will be removed, and he'll be removed from combat.”
It's a bit wordy, but most of the time I get a “yes”, and I can just say, “it works like the shield icon, but it only protects against damage and destroy effects. If the regeneration shield is used, tap your guy, remove all damage from him, and remove him from combat.”