If Captain America, Team Leader, could activate his ability both in and out of the Command zone, we would genuinely have an all-timer on our hands, and not one that could feel cheap or misused
You'll want to pick one or two themes and pick up other synergies where they're available, such as searching for alternate prints of staple cards with smiling artwork
Removing Shiny Impetus is fine since it doesnt really do much and likely wont generate much Treasure along the way
Does Mutate Trigger Heroic
Like most Pokmon cards, the value of Pokmon Ranger depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Steam Siege)
Labeled by the community as forced rotation, Modern Horizons 3 could completely alter the metagame