The exception would be Zendikar fat packs, which retail for close to $1000
There are plenty of amazing Un-cards to add to your Cube and these are some of the best
Then, when its not your turn, how do enchantress and zombies and tokens decks, etc
I dont actually find the card to be all that good in Vintage Cube, but once you lower the power level a bit and intend to play games that last a little longer, you really start to see the value of the card selection that Dragons Rage Channeler offers
Glacial Chasm Glacial Chasm is our final good damage prevention if you build around it card, and I like it because many of the cards you use to make it ticklike Solemnity, Ramunap Excavator, and Azusa, Lost but Seekingare impactful in their own right