They're specifically made to replace set and draft boosters
What About with Choose a Background
It seems like multiple Lord of the Rings cards with art by the Hildebrandts, including River Keplie, Abyssal Persecutor, and Seasons Past, have all become much more costly in the last month or so
Elder of Laurels will let me pump up one of my creatures so that I get to pop a +1/+1 counter on them when they attack
As long as The Mycotyrant is on the battlefield (and still a Fungus, or somehow a Saproling), that ability will count The Mycotyrant itself
At the time, we were trying to shake up our revisits, so instead of doing Gothic horror like we'd done in the original Innistrad block, we tapped into cosmic horror