team rocket sealed booster box EX Returns Pokémon Pack representing a true vintage artifact from the formative era of the hobby Found Ex Team Rockets Return

You could easily net 20 mana from your 10 lands

It can be paired with Valerifawn, Mystical Beast Of The Forest, which can special summon Kalantosa from the Graveyard and pop a card before using it as either a Synchro or Xyz Summon

Muse Seeker is worse due being much more fragile, however looting is more powerful than rummaging, which somewhat compensates

(1) During your Main Phase: You can apply 1 of these effects, or, if you have Dragon Ravine in your GY, you can apply both, in sequence

This online forum has a Yu-Gi-Oh-specific subreddit called r/YGOMarketplace , where you can meet, greet, and sell cards, both locally and online

Do they move the needle for a decks potency