Here's a snapshot from TCGplayer, capturing the three most valuable out the gate: As you can see, one can potentially open a $400+ card from a collector booster if they're lucky enough
Like most Magic: The Gathering cards, the value of Entity Tracker 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 (Duskmourn: House of Horror Promos)
Partner (You can have two commanders if both have partner.) Illustrated by Jason A
But within its thematic build, it is as effective as it can go for the typical casting cost of such a card
Each Pokemon has its own attacks and Abilities
You need to spend your first few turns playing cards like Mickey Mouse, Detective, Gramma Tala, Storyteller, and the song One Jump Ahead in order to ramp up your inkwell faster than your opponent