Whenever a player attacks one or more of your opponents, that attacking player creates a Treasure token (A Treasure is an artifact with ", Sacrifice this artifact: Add one mana of any color.").
If you would create one or more Treasure tokens (A Treasure is an artifact with ", Sacrifice this artifact: Add one mana of any color."), instead create those tokens plus an additional Treasure token (A Treasure is an artifact with ", Sacrifice this artifact: Add one mana of any color.").
Sacrifice five Treasure (A Treasure is an artifact with ", Sacrifice this artifact: Add one mana of any color.")s: Put five +1/+1 counters on Jolene.