They'll be included for the sake of completion, but I wouldn't take them as any sort of precedent
In the last week or so leading up to Lorcanas LGS release, decks featuring tons of low-cost/high lore value cards started appearing more frequently on the various digital Lorcana simulators, with Stitch, Rock Star at the helm
2-Color Town Cycle Baron, Airship Kingdom Gohn, Town of Ruin Gongaga, Reactor Town Guadosalam, Farplane Gateway Insomnia, Crown City Rabanastre, Royal City Sharlayan, Nation of Scholars Treno, Dark City Vector, Imperial Capital Windurst, Federation Center Final Fantasy includes a cycle of tapped dual lands with the town subtype
Not so with 90s
Gavin Verhey from Wizards of the Coast explains Heroes of the Realm 3.0 3.1 3.2 Comment by u/Wizards_Drew on r/magicTCG on Reddit Outside of a unlisted rule for the Commander format that the original recipient of a Heroes of the Realm card is allowed to use it
As for the bigger game-ending spells you have some more customizability