Guardian Angel goes on CD but you still remain dead.
I was playing as Gangplank
on the new Rift and went into battle with a Guardian Angel
. I went down, but "You have been slain" was immediately triggered and I had the death screen. Meanwhile the cooldown for Guardian Angel was triggered, the sound effect for the Guardian Angel played out, and it resurrected a standing but untargettable Gangplank in the middle of the fight, and he remained there until my death timer expired and I was resurrected in base. All players were able to see the standing but untargettable Gangplank during this time.