Tetra, The Zodiac's Echo

Hero (You may tap any number of Civilian creatures
you control to pay for that much mana towards
casting this creature.)
Before Tetra, The Zodiac's Echo would die, create a
copy of it. Heal that copy completely and put a -1/-1 counter on it.
{t}{1}{g} Tap target creature, put a stun counter on
target tapped creature and Investigate. On a 6, this
Tetra, The Zodiac's Echo dies.