25 Sept 2020
As long as Ashaya is on the battlefield, it's affected by its second ability and thus its first ability counts itself.
25 Sept 2020
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).
25 Sept 2020
The ability that defines Ashaya's power and toughness applies in all zones, not just the battlefield.
25 Sept 2020
A land that's a Forest has the intrinsic mana ability "{T}: Add {G}."
25 Sept 2020
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.