Tiamat Reborn

Flying, Indestructible
Whenever Tiamat Reborn enters
the battlefield or attacks, choose one:
• Destroy target permanent. Its controller loses
life equal to its converted mana cost.
• Exile target creature, planeswalker, or artifact.
You gain life equal to its converted mana cost.
• Search your library for an artifact card, put on
on the battlefield, then shuffle your library.