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

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

As a broad rule of thumb, somewhere around 8-10 spot removal spells is a reasonable amount to play in your Commander deck

Full details on the Proxies tab are in Stellar AIO's official documentation

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)

In fact, it is so popular that it has come full circle and received physical merchandise of its own