Mark 43 Armor

Defender
{u}: Mark 43 loses defender and gains “This creature can’t
be blocked.”
{2}{u}: Mark 43 becomes blue and has base power and
toughness 5/4. Activate only if Mark 43 doesn’t have
defender.
{4}{u}{u}: Draw three cards. Activate only if Mark 43 is
blue and only once.

A high-powered suit with escalating offensive potential
similar to Surge Engine's capabilities.