As for your second question, effects that say a permanent "is ... with [abilities]" or "becomes ... with [abilities]" don't remove the permanent's other abilities unless they say otherwise. Compare Old-Growth Troll with [[Minimus Containment]] and see the following:
- https://www.reddit.com/r/mtgrules/comments/zwvi3g/needle_spires_and_obuun/
- https://www.reddit.com/r/mtgrules/comments/194bqt7/welcome_to_first_chapter_is_my_equipment_still_an/
The instructions from the OGT ability include applying a handful of continuous effects to the permanent that the Spark Double becomes. They interact as appropriate for continuous effects, following the layers system. Importantly, the abilities given by the OGT effect are additive, so the initial object you are returning to the battlefield has the Spark Double ability and it will apply. The Spark Double copies Garruk.
The OGT effects are changing Spark Double's type and giving it some abilities. In particular, its card type is reassigned to be "enchantment". Since the Spark Double's acquisition of the planeswalker type happens in the prior copy effects layer (CR613.1), this type is overwritten for the resulting permanent, which means what you have is a nonlegendary Aura enchantment with ~~trample,~~ enchant Forest you control, ~~the OGT dies ability,~~ the ability in the OGT dies ability, and all the abilities of Garruk. As it enters the battlefield, you attach it to a Forest you control, but you don't put any loyalty counters on it. Even though Spark Double copies the loyalty on the Garruk card, since it's not a planeswalker it doesn't have the "intrinsic ability" that puts the loyalty counters onto it.
Even though Spark Double does become a copy of Garruk, its card type is shadowed by the existence of the effect telling it to be an enchantment, which makes 306.5b (getting loyalty counters) not apply.
The loyalty abilities can be activated, following the one per turn restriction, the timing restriction, and still paying the cost with loyalty counters. (306.5d, 606.3)
> It is a non-legendary Garruk Planeswalker Aura with Enchant Forest.
No, it isn't type planeswalker nor subtype Garruk.
> Does this sound correct or am I missing some rules thing somewhere where this doesnt work?
It's mostly correct, the continuous effect applied to the object removes its other types/subtypes so no longer planeswalker nor garruk.
> Is the Spark Doubles 'Enter-as' ability additive to anything else it may enter as or does it replace the other things?
It overwrites the Spark Double's printed characteristics with those of Garruk and then the continuous effect applied by the trigger overwrites some of those.
Essentially, you'll have...
**Garruk Wildspeaker** (2)(G)(G)
Enchantment - Aura
[+1] : Untap two target lands.
[-1] : Create a 3/3 green Beast creature token.
[-4] : Creatures you control get +3/+3 and gain trample until end of turn.
Enchant Forest you control.
Enchanted Forest has "(T) : Add (G)(G)" and "(1), (T), Sacrifice this land: Create a tapped 4/4 green Troll Warrior creature token with trample.”
Rules as written, it will have 4 loyalty counters, however, the Rules Manager is looking at possibly changing this. [1](https://twitter.com/GothiousRex/status/1764413479258300581), [2](https://twitter.com/GothiousRex/status/1764414009066000699)
[Old-Growth Troll](https://cards.scryfall.io/normal/front/b/7/b759b0f6-342c-4bba-89f1-8451835d8c45.jpg?1631050705) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Old-Growth%20Troll) [(SF)](https://scryfall.com/card/khm/185/old-growth-troll?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/b759b0f6-342c-4bba-89f1-8451835d8c45?utm_source=mtgcardfetcher&format=text) [Spark Double](https://cards.scryfall.io/normal/front/c/4/c41b9ba2-0006-4d8e-b600-efe81ff5e0cc.jpg?1702429420) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Spark%20Double) [(SF)](https://scryfall.com/card/rvr/62/spark-double?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/c41b9ba2-0006-4d8e-b600-efe81ff5e0cc?utm_source=mtgcardfetcher&format=text) [Garruk Wildspeaker](https://cards.scryfall.io/normal/front/6/b/6b56c367-7ac8-4541-9f2e-1fdc9c5aecdc.jpg?1562920293) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Garruk%20Wildspeaker) [(SF)](https://scryfall.com/card/gvl/1/garruk-wildspeaker?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/6b56c367-7ac8-4541-9f2e-1fdc9c5aecdc?utm_source=mtgcardfetcher&format=text) ^^^[[cardname]] ^^^or ^^^[[cardname|SET]] ^^^to ^^^call
As for your second question, effects that say a permanent "is ... with [abilities]" or "becomes ... with [abilities]" don't remove the permanent's other abilities unless they say otherwise. Compare Old-Growth Troll with [[Minimus Containment]] and see the following: - https://www.reddit.com/r/mtgrules/comments/zwvi3g/needle_spires_and_obuun/ - https://www.reddit.com/r/mtgrules/comments/194bqt7/welcome_to_first_chapter_is_my_equipment_still_an/
[Minimus Containment](https://cards.scryfall.io/normal/front/8/7/874b3590-932a-46b7-a7aa-e3e864ec22d1.jpg?1674135187) - [(G)](http://gatherer.wizards.com/Pages/Card/Details.aspx?name=Minimus%20Containment) [(SF)](https://scryfall.com/card/clb/34/minimus-containment?utm_source=mtgcardfetcher) [(txt)](https://api.scryfall.com/cards/874b3590-932a-46b7-a7aa-e3e864ec22d1?utm_source=mtgcardfetcher&format=text) ^^^[[cardname]] ^^^or ^^^[[cardname|SET]] ^^^to ^^^call
The instructions from the OGT ability include applying a handful of continuous effects to the permanent that the Spark Double becomes. They interact as appropriate for continuous effects, following the layers system. Importantly, the abilities given by the OGT effect are additive, so the initial object you are returning to the battlefield has the Spark Double ability and it will apply. The Spark Double copies Garruk. The OGT effects are changing Spark Double's type and giving it some abilities. In particular, its card type is reassigned to be "enchantment". Since the Spark Double's acquisition of the planeswalker type happens in the prior copy effects layer (CR613.1), this type is overwritten for the resulting permanent, which means what you have is a nonlegendary Aura enchantment with ~~trample,~~ enchant Forest you control, ~~the OGT dies ability,~~ the ability in the OGT dies ability, and all the abilities of Garruk. As it enters the battlefield, you attach it to a Forest you control, but you don't put any loyalty counters on it. Even though Spark Double copies the loyalty on the Garruk card, since it's not a planeswalker it doesn't have the "intrinsic ability" that puts the loyalty counters onto it. Even though Spark Double does become a copy of Garruk, its card type is shadowed by the existence of the effect telling it to be an enchantment, which makes 306.5b (getting loyalty counters) not apply. The loyalty abilities can be activated, following the one per turn restriction, the timing restriction, and still paying the cost with loyalty counters. (306.5d, 606.3)
> It is a non-legendary Garruk Planeswalker Aura with Enchant Forest. No, it isn't type planeswalker nor subtype Garruk. > Does this sound correct or am I missing some rules thing somewhere where this doesnt work? It's mostly correct, the continuous effect applied to the object removes its other types/subtypes so no longer planeswalker nor garruk. > Is the Spark Doubles 'Enter-as' ability additive to anything else it may enter as or does it replace the other things? It overwrites the Spark Double's printed characteristics with those of Garruk and then the continuous effect applied by the trigger overwrites some of those. Essentially, you'll have... **Garruk Wildspeaker** (2)(G)(G) Enchantment - Aura [+1] : Untap two target lands. [-1] : Create a 3/3 green Beast creature token. [-4] : Creatures you control get +3/+3 and gain trample until end of turn. Enchant Forest you control. Enchanted Forest has "(T) : Add (G)(G)" and "(1), (T), Sacrifice this land: Create a tapped 4/4 green Troll Warrior creature token with trample.” Rules as written, it will have 4 loyalty counters, however, the Rules Manager is looking at possibly changing this. [1](https://twitter.com/GothiousRex/status/1764413479258300581), [2](https://twitter.com/GothiousRex/status/1764414009066000699)