pokemon fan club card SR Pokémon SM5S 071/066 Supporter Rarity Sun & Moon Ultra Prism

Theyre pretty affordable right now and can be preordered via TCGplayer

Collectors in this hobby search $4 packs, sadly people can stoop real low in this hobby

The Treecko and Mareep both have their respective set stamps, so I assume the Dratini has the same treatment going on as well

The only matchup I can think of where the benefits of shutting the opponents mana off potentially outweigh shutting off my creature lands is U/W/R Control, and even then this lets them use the Tear side of the Wear // Tear they usually bring in (assuming they are smart enough to fetch out their basics early on)

You also gain a small amount of synergy with discard and prowess themed cards