The Dogman

Whenever The Dogman enters the battlefield or attacks, investigate. (Create a colorless Clue artifact
token with "{2}, Sacrifice this artifact: Draw a card.")
As long as there are two or more legendary
creature cards in your graveyard, The Dogman
gets +2/+2.
"Strange how, as long as the hardship lasts, we can
stand it. As soon as the crisis is over, the strength all leeches away in an instant."