Mark 42

Armored.
(when this creature blocks prevent any damage dealt
to it. then put {x} -1-1 counters on this creature where
{x} is how much damage was prevented)
At the beginning of your upkeep repair Mark 42.
{Remove all -1-1 counters off target
creature. if target creature has no -1-1counters on it
add a +1+1 counter than double the amount of +1+1 counters on that creature}