A good practice is to always evaluate your hand for the best Trainer card to play at the start of your Action Phase, maximizing its impact
Krarks ability lets you copy instants and sorceries, and Sakashima removes the legend rule while becoming a copy of Krark
The general idea is that if you have 8 of an effect that is enough to see it reliably and possibly make your strategy more consistent and, by default, viable for decks that are needing that singular copy to make a strategy work
In most formats, this pair is a control deck, with solid black removal and blue card-drawing overpowering traditional decks through card advantage
Three sets have been released for Disney Lorcana, with the third set, Into the Inklands, introducing new elements such as Locations to the game