They can be obtained mainly by completing deck missions
The audacious artwork of Pikachu clutching a McDonalds mealcomplete with fries and a drinkbecame an instant cultural icon, cementing these cards as chase-worthy grails
Two strong cards in Invasion of Chaos ended up getting an errata, and DMOC was the first in 2015
However, if you were to return a cheap one mana creature to your hand, the value is excellent , especially if you can still recast that creature again in the same turn.
Ranking: Want To Build Kotis, Sibsig Champion Kotis is an incredibly underwhelming commander, in my opinion
It might sound crazy but is the McDonalds Pokmon drop, or the cards in general, worth your time