As an alternative to the second ability, what do you think of, using old wording here for clarity, "All mana in your mana pool becomes colorless." I'm not sure what that current wording would be, since mana pool is gone. That decreases the worry of popping of any burn spell or as a Harmless Offering.
Fair- I thought total land destruction would have costed more in the current era, but the most recent card, Fall of the Thran is only six mana. I will cut this down to six, though I wonder if it could be five since the players will essentially get an extra turn of full mana.
Overcosted? Ignoring the likes of Armageddon, this still seems worse than Boom // Bust even without taking mana cost into consideration - and Bust is one half of a split card.
No longer makes artifacts and enchantments plains in addition to their other types and now is a catch-up based on opponent's lands, artifacts, and enchantments
Hmmm. White does get to mess with enchantments and artifacts. If this weas "instead of" rather than "as well as" I'd have no argument with it. (Uh, apart from it accidentally nuking itself.)
Personally, I think I'd let this go as a colour stretch. It affects everyone technically equally; and it's late-game enough that although it's a huge ramp it's probably not going to be environment-wreckingly-good.
White very rarely does ramp at all, though I guess it is the next color after green to get it. It usually gets ramp via catch-up mechanics, though. I don't know that either your current iteration or proposition are in-color.
Can I do this?
Is this white? I was inspired by Smothering Tithe, but tried to fit it to the world of Envertol.
Also, I realize this opens white up to mass land removal.
"your upkeep" to "each upkeep"
was missing the legendary supertype
As an alternative to the second ability, what do you think of, using old wording here for clarity, "All mana in your mana pool becomes colorless." I'm not sure what that current wording would be, since mana pool is gone. That decreases the worry of popping of any burn spell or as a Harmless Offering.
Reduced cost from 8 to 6.
Fair- I thought total land destruction would have costed more in the current era, but the most recent card, Fall of the Thran is only six mana. I will cut this down to six, though I wonder if it could be five since the players will essentially get an extra turn of full mana.
Overcosted? Ignoring the likes of Armageddon, this still seems worse than Boom // Bust even without taking mana cost into consideration - and Bust is one half of a split card.
Had a p/t for some reason
Updated using Fblthp's wording.
Yeah. Once it gains the etb effect, it's too late to trigger since it already e'd tb
When that creature is returned to the battlefield from exile, return target artifact and enchantment from your graveyard to the battlefield.
Reduced from
to 
fixed typo
fixed typo
No longer makes artifacts and enchantments plains in addition to their other types and now is a catch-up based on opponent's lands, artifacts, and enchantments
Ok maybe then:
Enchantments are artifacts in addition to their other types
Artifacts have "
: Add 
"
Turning artifacts and enchantments into only lands is solidly green's wheelhouse
Hmmm. White does get to mess with enchantments and artifacts. If this weas "instead of" rather than "as well as" I'd have no argument with it. (Uh, apart from it accidentally nuking itself.)
Personally, I think I'd let this go as a colour stretch. It affects everyone technically equally; and it's late-game enough that although it's a huge ramp it's probably not going to be environment-wreckingly-good.
White very rarely does ramp at all, though I guess it is the next color after green to get it. It usually gets ramp via catch-up mechanics, though. I don't know that either your current iteration or proposition are in-color.
Noted, maybe gets plains equal to artifacts and enchantments opponents control?
Smothering Tithe? Eh, not really. I don't think white should be getting unemotional ramp, which is basically what this is
Can I do this? Is this white? I was inspired by Smothering Tithe, but tried to fit it to the world of Envertol. Also, I realize this opens white up to mass land removal.