Worldgorger Dragon + Eternal Witness = explain

[wuaffiliate]

I thought i would ask for an explanation so we have it here so people can read it.

[Kowal]

1)  Play Animate Dead.
2)  Trigger resolves targeting Worldgorger Dragon.  ROAAAAR
3)  Whoops, all your stuff leaves.  Here's the usual dragon loop.
4)  Dragon dies.  Dies rhymes with mise.  Your stuff comes back untapped.  And you do that Dragon thing with infinite mana and either Bazaar or Compulsion.
5)  You mill away a good chunk of your library.  It's imperative that you've got a Witness in the bin and another animate somewhere.
6)  Instead of enchanting Laquatus, you get Witness.  It returns Animate to your hand, or something more useful (like force or something) if you've got one already.
7)  Animate the Dragon.

At this point, you have two triggers to resolve each time loop goes through.  You have a global Animate comes in to play trigger, and an Eternal Witness comes in to play trigger.  Stack so you resolve the witness trigger first, and pick up your entire graveyard (which is your entire library at this point)

From this position, you can ancestral them to death, or just abuse the Legend rule to begin the loop over again after Time Walking, or hell, even beat down or something.  It really doesn't matter.