The answer is fairly straightforward: Trainer Gallery cards are full art cards that often, but not always, showcase Trainers with their Pokmon
Normal Magic games (what I like to call Black-bordered World) have a special force field that protects itself from wacky Un games (what I like to call Silver-bordered World)
He can pay life to get artifact spells from the graveyard, while YShtola, Nights Blessed can help you get some of that life back
It actually only destroys the ones you dont control, which means you can play it even in a deck filled with permanents and not worry about it at all
More experienced players will find success in custom deck building, carefully balancing Energy types with Pokmon attack costs and incorporating Trainer cards for strategic advantage
Tinker Bell has a cost of 6 Ink, though this is reduced to 4 with the usage of Shift