Mana Storm Elemental

Mana Storm Elemental is not a creature unless
you have seven or more mana in your mana pool.
As long as Mana Storm Elemental is a creature, whenever you cast an instant or sorcery spell,
copy it for each spell cast before it this turn.
Whenever you cast or copy an instant or
sorcery spell, add one mana of any color to
your mana pool.