Zi, The Martyred Goddess

Defender
If Zi, The Martyred Goddess would be removed
from the battlefield, instead return her with a
+X/+X counter, where X is the number of times
creatures you control have died
{2} Sacrifice Zi, The Martyred Goddess- Destroy
target creature you control
{t} Zi, the Martyred Goddess deals damage equal
to her power to target opponent. Activate only
if a creature died this turn.