Leinta, Druidic Princess

When Leinta enters the battlefield, if you cast it, untap all Druids you control.
Druids you control get +1/+1 and have, "{t}: add one mana of any color."
Whenever a Druid enters the battlefield under your control
you may pay {2}. If you do, choose one:
• Gain 4 life
• Untap target permanent
• Return target card from your graveyard to your hand