Droid Factory

When this land enters the battlefield create {x} scrap tokens
{1} sacrifice a scrap token: create a Droid token
{2} sacrifice a scrap token: create a Commander Droid token
{3} sacrifice 2 scrap tokens: create a Super Battle Droid token
{4} sacrifice 2 scrap tokens: create a BX Droid token
{5} sacrifice 3 scrap tokens: create a Droideka token