Leyline of Ultimate Essence

If Leyline of Ultimate Essence is in your starting hand, it starts in play. If it isn't, when you draw it, reveal it, if you didn't, you can't cast it. When you reveal Leyline of Ultimate Essence from your hand, if your opponent has the ability to pay it's mana cost, they may and then they may make a copy of it.
Mana you produce from any source is mana of any color.