Can he bring his low-level dorm, Slifer Red, to the top of the Deck
Legendary Artifact - Book Artifact (CTRL to add secondary) Creature Brallin, Skyshark Rider Partner with Shabraz, the Skyshark (When this creature enters, target player may put Shabraz into their hand from their library, then shuffle.) Whenever you discard a card, put a +1/+1 counter on Brallin and it deals 1 damage to each opponent
This will give you an accurate estimate of what your card is currently worth on the secondary market
The end result is that Gates with Spelunking might actually just be broken, not "good for a budget deck" broken but "best deck in the format" broken
Most importantly, playing it is useful whether youre winning or losing , despite the Burgeoning half being locked behind a catch-up mechanic