Goldnight Redeemer and Angel's Tomb
To expand on user1873's answer ever so slightly - they're both your abilities, so you can put them on the stack whichever way you want.  You want to put the Goldnight Redeemer's ability on the stack first, and then Angel's Tomb's ability on the stack after that.  

The abilities then resolve in a Last In, First Out style: at the top of the stack, the Tomb becomes a creature.  Then we move on to the Redeemer ability and gain 2 life for each other creature - which now includes the Tomb-Angel.

Stacking triggered abilities correctly can be a bit difficult to visualise at first, so I thought it would be useful to provide a little walkthrough...