Trading doesn't really make those rare cards more available, it just gives fans a tool to earn them in exchange for something
Bounce is especially strong in limited formats, the ally ability can both remove opponents tokens and protect your 0-cost champions, ambush is always great, and 6 unblockable offense is no joke
With exciting new mechanics, cards, and new Pokemon added to the game with every new video games launch, there are plenty of fun things for collectors and players to enjoy
If I had to think of the best, classic one-mana cards in every color, I would choose Swords to Plowshares, Ancestral Recall, Dark Ritual, Lightning Bolt, and Birds of Paradise
Read WotC's fan content policy here: A copy of Photoshop