Depths Diplomat

When this creature enters the battlefield, put a
Shroud counter on it. At the start of your upkeep,
you may replace it with a Hexproof counter and you
and all cards controlled by you cannot be targeted by
enemy spells or abilities until your next turn. When
this creature attacks, if it has a Shroud counter on it,
you may replace the Shroud counter with a
Deathtouch counter.