David Schumann discusses some casual staples with unexpectedly high prices that you may still be able to find in binders or “bulk boxes” at stores.
Khalni Hydra
Rise of the Eldrazi is the Timmy dream set. It’s what you’d get if you built a set with the premise of “no rush till turn 7” and packed mana accelerants in everything. The set is based around the Eldrazi, giant and evil old legends that awaken on Zendikar. There’s a little bit of plot to this set, but mostly people remember weird drafts and a couple really big monsters.
Gregory gives you a full-set card by card design review of Mirrodin Besieged.