Metamagic Spell Completion (Su): At 11th level, an artificer gains the ability to apply a metamagic feat he is familiar with to a spell completion rehashing the Warforged's role in Eberron. The book talks about where they are available, their connection, previous and present-day, along with the Lord of Blades, https://edgarngyrh.blogolize.com/the-smart-trick-of-d-d-genasi-5e-that-nobody-is-discussing-67610719