Combos Utilizing Nebuchadnezzar

Bounce permanent (with elemental) and then force opponent to discard it

Now the nebuchadnezzar will always damage your opponent.

basic megrim thing...they discard and take dmg

tap all your lands for mana, then return all lands to their owners' hands with sunder, then use neb's ability and choose a land type that your opponent wa using. deadly against single-colour decks.

Use the glasses to pick the cards your opponent discards