At first glance, the effective mana cost of this effect is 3 mana (2 mana to activate, and 1 opportunity cost mana from having to tap itself) but upon closer inspection, since it finds you an untapped basic land which you can then tap for mana, you effectively get refunded one of the mana, and the actual effective mana cost of this effect is 2, which puts it on-par with Tectonic Edges mana efficiency
Shield Series, 1 metallic Pokmon coin, and a Pokmon
Flareon ex and Primarina ex are also interesting cards to experiment with in matches, although theyre admittedly not the strongest options for Fire-type and Water-type ex cards in the current competitive scene
Even moreso when things like Gilded Lotus are also here to make ramping up that much mana easier than ever, surprisingly making colourless a force to be reckoned with in this set
I have a huge collection of single cards card sets wax packs cant books and even sets