While the parts of the card are complex, with lots of information for newcomers, Gateway slows down the pace of learning, to provide time to absorb every detail
Abilities that say that a triggered ability triggers additional times won't apply to copying a triggered ability
Lastly, take a look at our Lorcana Ink Types article, which will give you a deeper insight into what the games Inks represent, as well as how they function differently in Disney Lorcana
As for standout creatures, both G'raha Tia, Scion Reborn and Estinien Varlineau provide massive power for casting noncreature spells, which can easily help you close out the game with even just a few triggers
Last years Introduction to Evil set sought to bring new players to the series, with a focus on streamlined gameplay intended to make it easier for newcomers to pick up and play
Its a cool idea, and better executed here than in previous sets, but you are still hurting by playing against the flow of this slower, less aggressive format