Tree-o'-the-Wisps

{t}: Add {b} to your mana pool.
{x}{b},{t}: Create X 0/1 black Will-o'-the-Wisp creature tokens with flying, and "{b}: Regenerate
Will-o'-the-Wisp." Spend only {b} to pay for X.
Some nights are made for torture, or reflection, or the savoring of loneliness.