Leonard Mitchell, The Star

Vigillance, Reach
{x}Steal target artifact where X is the mana cost of card + 2.
While Klein, The Fool is on battlefield all players must discard their hand at the end of their turn until Leonard Mitchell, The Star or Klein, The Fool leaves the battlefield.
"Everyone here isn’t to be trifled with… Is this what’s called a gathering of protagonists?"
—Leonard joining Tarot Club