Universes Beyond cards from The Walking Dead up through Final Fantasy have a distinct frame and a specific inverted triangle holofoil stamp that set them apart from the cards that are canon to the Magic multiverse
Episode 4 The two teams, the Sun Empire contingent and the Legion of Dusk expedition, have made their independent ways deep underground, each having encountered some of the less-than-hospitable denizens within the caverns
Now, you draw a Shivan Dragon, with 8 Mountains in play and 1 more in hand (already played one this turn)
Jetfire has an interesting game plan, +1/+1 counters, and artifacts in Mono-blue This is a hard sell, but if you can pull it off, extra mana generation is always powerful
The simple fix to this is giving people reasons to splash outside of their core colours
"If you wish to assassinate a master assassin, you'll have to do better than that."