Druid Class

Whenever a land enters the battlefield under your control, you gain 1 life.
{2}{g}: Level 2
You may play an additional land on each of
your turns.
{4}{g}: Level 3
When this Class becomes level 3, target land you control becomes a creature with haste and "This creature's power and toughness are each equal to
the number of lands you control." It's still a land.