Doomsday

Anytime Doomsday dies, return it to the
battlefield at the beginnig of your next
upkeep. It gets a +1/+1 counter. Those
counters remain in Doomsday no matter
the zone he is.
If Doomsday has one +1/+1 counter he has
vigilance, if has two has first strike, if has three
has deathtouch, if has four has double strike
and if he has ten or more Doomsday is
indestructible.