Fyndhorn Hunter

Whenever another Elf enters the
battlefield under your control, you may
untap Fyndhorn Hunter.
{t}: Add {g} to your mana pool.
{t}: Fyndhorn Elf deals damage to target
creature equal to the amount of green
mana in your mana pool.
The arrows of Fyndhorn Elves are
made to hold all the might of the trees that
made them.