Nesting Bot

Start your engines! (If you have no speed, it starts at 1. It increases once on each of your turns when an opponent loses life. Max speed is 4.) When this creature dies, create a 1/1 colorless Servo artifact creature token. Max speed — This creature gets +1/+0.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6oejababmvpb1hzkjcuo42.