Thats at least three Clues, but it should be a lot more
They represent another way for red to sprint to victory
Youre more likely to have a good curve and a good mix of lands and spells, and if you have color intensive planeswalkers, like Liliana of the Veil or most four-mana planeswalkers, itll be a little easier to cast them
its a two mana exile and often strands a land or noncreature spell in play, unable to be cast
The preview confirms this is WotCs plan, teasing that youll have to wait to see how we handled the other half. The idea of having such famous dungeons and lairs as Castle Greyhawk or the Tomb of Horrors as their own Magic cards is just too exciting for R&D to not have them in this set
Just like a ton of TCGs from the same era, such as Pokmon and Yu-Gi-Oh!, vintage Magic: The Gathering cards are simply unbeatable when it comes to collectability especially when the original artists get involved