Examples are Brock's Mankey (switches the defending Pokemon, was played as an "anti-Slowking"), and Cleffa (this card was literal bajeezus since it's a 1-energy draw seven (!), doesn't require evolution, retreats for free, and even had a 50% chance of avoiding any counterattack)
Chase Cards: Crystal Lugia, Crystal Nidoking, Espeon
If this card battles, after damage calculation: Detach 1 material from this card
Barret, Avalanche Leader* Much better than Barrett from the main set, Final Fantasy 7 Commander Deck Barrett, Avalanche Leader provides a solid body that creates tokens for your equipment, and provides a limited, but completely free attaching method each turn
Phenax, God of Deception $10 Im already counting the days until Phenax screws me over
Finally there is Martial Coup