Not much here as a lot of set specific mechanics and I'm still not into double-faced cards for this cube but some nice upgrades.

Thirst for Discovery is a nice upgrade over Thirst for Knowledge, and it's great to see Hero's Downfall at uncommon.

Other bits are to strengthen the blue-black zombie sub-theme and the blue-red spells matter deck.

Don't normally pay much attention to Secret Lair drops, but have been after a set of signets for a while to crank the power level in the cube a little and these Dan Frazier illustrated ones are awesome.