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] | Card Merchant Takapuna](http://www.cardmerchanttakapuna.co.nz/cdn/shop/products/8d10d182-8e7e-5b2b-b21b-b1aad7c76c4d_176f1dc1-a3d4-4bec-a042-7a6c5e211b1e.jpg?v=1698574698)
