Stag of New Seasons

At the beginning of your precombat main phase, choose the first-most mode that hasn't been chosen -
- Add {g}{w} to your mana pool.
- You gain 7 life.
- Draw two cards.
- Tap all creatures. Those creatures don't untap during their controller's next untap step. Exile Stag of New Seasons, then return it to the battlefield under its owner's control.