Requested WoW macro

I want to cast Death Pact, then target pet and use Death coil to heal it. Also want to show the cooldown for Death pact (its the last bit i cant figure out) so i know when i can use it again.

so far tried this:

#showcooldown Death Pact
/target pet
/cast Death Pact reset=120
/cast Death Coil

while it does what i ask in terms of using abilities, its not showing the cooldown of Death pact. Any help would eb appreciated.