Mystic Elven Hammer

When Mystic Elven Hammer enters the
battlefield you may attach it to target elf
creature you control.
Equipped creature gets a +2+2 and trample.
If Equipped creature is an elf then it gets +6+6
and trample.
Equipped creature also has {t}: Add one mana
of any color to your mana pool.
Equip: {3}