Boar Dibbles, the Trailblazer

Hexproof
As Boar Dibbles, the Trailblazer enters the battlefield, choose an opponent at random.
At the beginning of combat on each player's turn, if
that player has been dealt non combat damage this
turn, all creatures that player controls must attack the player that controlled the source of the damage.
{x}{r/w}{u},{t}: Boar Dibbles, the Trailblazer deals X
damage to target player. If this ability targets the
chosen opponent deal double X damage to that player instead.