Haakon, Scourge of Men

You can only cast Haakon, Scourge of Men if damage was dealt this turn.
If a creature dealt damage by Haakon, Scourge of Men this turn would die, Haakon, Scourge of
Men deals 1 damage to each player.
When Haakon, Scourge of Men is sent to the graveyard exile him instead, you may search your hand and/or library for a creature named Haakon, Stromgald Scourge and put it in your graveyard.