Neralith, Druid of the cycle

Whenever a creature you control dies, you may return a land card from your graveyard to the battlefield tapped.
Whenever a land enters the battlefield under your control, you may return a creature card with converted mana cost 3 or less from your graveyard to your hand.
At the beginning of each end step, if you gained life this turn, create a 1/1 green and white Dryad creature token.