Like most Pokmon cards, the value of Chikorita 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 (Hidden Legends)
Most Dimir cards that steal permanents or spells do so in a 2-step process, where you usually have to pay a cost or activate another ability to get the card you milled or took from their hand
With that said, there is no way that WotC is going to stop printing foil cards entirely
Also, you get a nice big flying creature with lifelink, which will discourage most attackers
This precon was heavily criticized for its landbase, construction, and failure to inspire as a land theme
The field notes cards remind me of the schematic cards from the Brothers War expansion