This is a fairly simple combo to pull off.

Ghostly Flicker is an Instant that exiles two of almost any permanent. I Archaeomancer is a creature that brings back a single Instant or Sorcery from the Graveyard to its controller's hand when it enters the battlefield.

Thus assuming you have Archaeomancer on the board already, when you cast Ghostly Flicker, you target both the Archaeomancer and one other valid permanent.

The Ghostly Flicker goes to the Graveyard after resolving, leaving the effect of the Archaeomancer on the stack.
When that effect resolves, you choose the Ghostly Flicker, returning it to your hand. As long as you have at least  available you can repeat this sequence indefinitely.