Ashaya, Soul of the Wild
Zendikar Rising — Mythic
Legendary Creature — Elemental
Ashaya, Soul of the Wild rulings:
2020-09-25: The ability that defines Ashaya's power and toughness applies in all zones, not just the battlefield.
2020-09-25: As long as Ashaya is on the battlefield, it's affected by its second ability and thus its first ability counts itself.
2020-09-25: Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to Ashaya may become lethal if lands you control leave the battlefield during that turn.
2020-09-25: You can't play creature cards as lands; you'll still have to cast them as spells, and they'll enter the battlefield as lands (in addition to their other types).
2020-09-25: A land that's a Forest has the intrinsic mana ability ": Add ."