Stern Lesson, as a Catalog variant, isnt particularly good in Blue/White, but triggering your draw two abilities in Blue/Black, and ramping in Blue/Green make the card better for those decks
Its definitely a shame that your Local Game Store doesnt make very much profit on these boxes, but thats the current state of the industry right now
(2025-06-06) Replacement effects are unaffected by Traveling Chocobo's ability
The drawn cards give Lady Octopus more cards to cheat with and accelerate her own activated ability
The colors also get brighter as rarity increases, with bronze, silver, then gold almost like medals
We have a variety of ways to keep triggering Kardur: the most common is by making token copies of Kardur with cards like Jaxis, the Troublemaker and Orthion, Hero of Lavabrink which trigger his mega goad before dying, but we also have bounce with Skull Collector and reanimate/blink with Rescue from the Underworld