Mortalis Coin LV.4

Usage affixed to armor. Activate Free Action-envision;
Trigger You are reduced to 0 Hit Points by damage
but not immediately killed; Requirements
Expert in Fortitude saves. If the triggering damage
would cause you to become dying 2 (due to a
critical hit or crit failure), you become dying
1 instead. In addition, for 10 minutes, you die
from the dying condition at dying 5, rather than
dying 4.