Rumor Spreader

You may tap Rumor Spreader while casting an
instant or sorcery spell that targets one or more
other creatures. If you do, it pays for {1} or one
mana of Rumor Spreader's color.
Whenever Rumor Spreader becomes untapped
for the first time each turn, you may tap another target untapped creature.
''Sweetie, I've to tell you what I just learned! You're
never going to believe me...''