My boi chilling

At the beginning of your upkeep, tap My Boy Chilling. If there is not either a Treat or Satiated token on it, My Boy Chilling gets Sad.

When a player attacks you, if My Boy Chilling is tapped, untap it. Then, My Boy Chilling Barks at that player.
{g}: Put a Treat token on My Boy Chilling.
{u}: Put a Satiated token on My Boy Chilling.
{0}: If My Boy Chilling is tapped, Pet it.