On the trainer cards they all are directly under the P in Pokemon at the bottom of the card
Since Treasure tokens are tokens with no counters on them, they cant be proliferated
It is also possible to filter by expansion (set) by typing "e:SET_ID" in the search bar
Specialty hobby shops and local game stores are reliable sources since they regularly stock singles, older sets, and sometimes even showcase rare cards behind the counter
Like most Magic: The Gathering cards, the value of Minas Tirith 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 (The Lord of the Rings: Tales of Middle-earth)
The last original creature in the preview is The Earth King himself, a 4-mana legendary green creature with the ability to summon and use powerful tokens