Flying, vigilance, haste
{T}: The next 3 damage that would be dealt to target creature you control this turn is dealt to another target creature instead.
If either target creature leaves the battlefield before damage is dealt, that damage won’t be redirected. It doesn’t matter if Razia leaves the battlefield.
The 3 damage doesn’t have to be from the same source, and it doesn’t have to be all dealt at once. If only 2 damage is redirected, the next 1 damage will also be redirected.