Blue's strengths are drawing cards, taking control of opponents' cards, countering (negating opponents' spells), and flying creatures or creatures that cannot be blocked
Costing just three ink to play, it seems that Gustav The Giant, Terror of the Kingdom is the greatest deal in Lorcana history until you read the characters first ability - All Tied Up
Pumpkin Bombs is interesting, allowing you to discard two and draw three, one more card than were used to with these effects
Samut is just good
Dont get me wrong, it's a strong card, just not quite at the level of the others
All of the decks were used to expertly enhance their sets in some way, fleshing out themes or providing extra flavor