Free stuff from your hand is great
A proxy is a stand-in for an existing card, usually a reprint of a real card's text and art so you can playtest without buying the original
But beyond just having the right mana to cast your spells, reds mana-base is so enticing because of the utility lands it gets to play
It becomes card draw for you and a massive advantage with Kaya, Orzhov Usurper for graveyard hate, flicker on Charming Prince, and good old targeted exile removal like Despark
If price is of no concern to you, by far the best black wipes are Damnation , Toxic Deluge and The Meathook Massacre
in 20% of packs youll also get a Traditional Foil Land card Wrap Up Lindblum, Industrial Regency | Illustration by Piotr Dura I cant wait to get these adventure lands into my EDH decks, but those are just the tip of the iceberg for what Final Fantasy has introduced to Magics mana bases