I dont know that the second ability has much infinite potential here just because its tough to convert energy into mana, but even activating it once at the right time could be extremely impactful (for instance, with a copy or two of Aether Revolt on deck)
The only major technical hurdle would be Pockets always-online functionality
If you have multiple alternative costs to choose from, you may only use any one
Jafars minions include a new character classification, Colossus, as well as Lorcanas first ever Location classification, Obstacle, which cant be moved to and will prevent your team from stealing the crown if Jafar has two or more in play
Ruby cards tend to focus on aggression via banishing opponents and costing opponents Lore, and that continues with the new set
With support cards such as Giant Cape, Raichu is actually able to survive counterattacks from more powerful hitters