Kingsoul

Hexproof, protection from White and Black. Echo {p/c}{p/c}{p/c}
{w}Equip creature.
{0}Equip Legendary creature.

Equipped creature has Ward {2}.
At the beginning of each upkeep, put a soul counter on equipped creature.
If equipped creature is legendary it has protection from white and black.

Whenever a legendary creature enters the battlefield under your control, you may attach Kingsoul to it.