Whenever another artifact enters the battlefield under your control, put a +1/+1 counter on Jackknight. If that artifact is a Contraption, Jackknight gains lifelink until end of turn.
"My sword is at your service, as are my scissors, corkscrew, and bottle opener."
![Jackknight [Unstable] MTG Single Magic: The Gathering](http://www.undiscoveredrealm.com/cdn/shop/products/jackknight-unstable-mtg-single-magic-the-gathering-356531_1024x1024.jpg?v=1693643419)
