How does Disintegrate work? Doesn’t the damage kill the unit after the spell has resolved?

Disintegrate is a funny one—it looks like it works, but the more you understand the rules, the more it looks like it might not work after all. Units dealt lethal damage by a spell aren’t killed immediately, they’re killed right after that spell resolves. To solve this little rules conundrum, we’re using the new reflexive trigger wording here as well. Action (Play on your turn or in showdowns.) Deal 3 to a unit at a battlefield. If this kills it, do this: draw 1.

Related: Disintegrate