Daring Alleyway Arsonist

Haste
Infiltrate {r} (You may reveal this card and pay its infiltrate cost. If you do, add it to an opponent's hand. That player must play with this card revealed. Their hand has been infiltrated. This card's owner may cast it at any time they could cast a sorcery as long as it is revealed in a player's hand.)
During each upkeep this card is revealed in a player's hand, it deals 1 damage to that player.