Lenwulf, Obsessed Tinkerer

At the beginning of your upkeep, or whenever you cast an artifact spell, add a metal counter to Lenwulf, Obsessed Tinkerer.
{1}{w}, {t}: Remove X metal counters from Lenwulf, Obsessed Tinkerer and create an X/X Construct artifact creature token.
"Rise my children, rise! Except for you, #1386, your still a prototype."