Living Armor

{t}: Sacrifice Living Armor: Target creature
becomes Equipped it with a "Dead Armor"
Equipment token with "Equipped creature
gains toughness equal to its casting cost."
{3}{b}: Put Living Armor into the battlefield
transformed into Unliving armor. If you
control a creature with a Dead armor token
on it, destroy that token and attach it to that
creature.
"I made the first, as a test." - Leshrac