Help!

[Bozo_Law]

What is a rare that has a lot of different printings, arts and maybe promos that is on the cheaper side money-wise? I am looking for a cool card to collect.

[Silent1236]

{Nightmare}!!
{Shivan Dragon}!!
{Birds of Paradise}!!
{Bad Moon}!!

[Spikepit]

 {Nightmare} would be my choice and one of my first fav cards to!

[Mlerner12]

{Clone}. Standard, too.

[The1337Magician]

Although it's not rare, it's been printed the most of any non-basic land card. {Giant Growth} has been printed 31 times. It would be a chalenge.
Honorable mentions:
{Stone Rain} 22
{Counterspell} 22
{Llanowar Elves} 21
{Giant Spider} 20
{Unsummon} 19
{Birds of Paradise} 17
{Naturalize} 14