The Planeswalker Elspeth arrived in Theros during the climax of Heliod and Purphoros's battle
Having cards in your hand can easily become a problem, especially later in the game, so any card that allows an easy way to build up your hand is crucial
I mean hellcompare Thragtusk to Primeval Titan
Hidden sharknado in a tornado Magic art slowly progressed from "IDK, draw something, four-year-old-child-I-have-pulled-off-the-streets" to "beautiful works of art they should hang in galleries." Take for instance, the Desert Twister: it depicts a huge tornado an unworldly one, obviously burning across the desert towards a fleeing woman who, like Lot's wife, is gazing back in horror
Empyreal Voyager: [Category 3] Deal combat damage to a player for 1 Energy
Like LSV drafting Cube, you can go all-in on the Storm strategy without ever seeing Empty the Warrens or Brain Freeze