I am at 3 life
in my graveyard are:
Angel of Mercy
serpent warrior
A Living Death is cast
Do I die?
I am at 3 life
in my graveyard are:
Angel of Mercy
serpent warrior
A Living Death is cast
Do I die?
Only if you want to. Since you control both triggers, you decide which order they resolve in.
Fluttershy is best pony.
why would i want to?
and what if he cast the living death does he decide
You can always decide which order triggered abilities on the stack resolve in if you control them, and as long as they're entering the battlefield under your control, you control the abilities.