Venerable Dreadnought

Trample, Protection from Blue and Black, Squad 4. Crew 1 Whenever another creature you control dies, Venerable Dreadnought gets +1/+1 until end of turn. Whenever Venerable Dreadnought becomes crewed, target creature that crewed it phases out for as long as Venerable Dreadnought remains on the battlefield. When Venerable Dreadnought leaves the battlefield, destroy all creatures phased out by it.