Indeed, its like every single card we get is part of this fantastical world that the Lorcana team has created
Excalibur II isnt as strong as Excalibur, Sword of Eden
But at the end of the day, there was no forward progression
Each one has a strong questing value that forces opponents to challenge or risk falling behind, and then once challenged and/or banished, their effects activate drawing you cards, forcing opponents to discard or return a character to their hand, and more
More importantly, it has the ability Second Wind, which reads: Whenever an opposing character is damaged, ready this character. Most ready effects in Lorcana specifically state that a character who is readied cannot quest again for the rest of the turn, but a select few powerful characters can ready and quest multiple times in the same turn
Gruul doesn't really have any outright counters to add to the deck