Hi i have a combo i would like to share, it needs old cards
(witch are some of the best) but can really get on your oppents
Cast animate land on lets say your opponents forest (it
works for any land) it makes it a 3/3 creature but is still a land, he might
think your crazy but then you cast:
Eradicate, eradicate says : destroy target creature then look
through your opponents grave yard, hand and library and discard all cards of
that creatures type from the game, well that would be his forest, so you remove
all his forest from the game cause that was the creature type. You can pull
this off by second turn with dark ritual.
Hope this helps :).