The Lady of the Lake

The Lady of the Lake costs {1} less to cast for
each Legendary Creature you control.
Enchantment spells you cast cost {1} less to cast.
You may equip artifacts without paying their
equip cost.
{1}{w}: Sacrifice Lady of the Lake, return target artifact or enchantment from
your graveyard to your hand.
"And the Knight there saw an arm clothed in white samite, that held a fair sword in that hand."