Veterans will remember how powerful Adventure cards are in Limited, providing two cards in one, so getting good Warp cards will increase the power and stability of a deck
For me to regret passing you the Sarkhan, here's what has to happen: First, we have to get paired (typically, you play against three of your seven opponents)
Other good payoffs are spells with X in their mana cost like Crackle with Power, Mass Manipulation, and Animist's Awakening that benefit from pumping tons of mana into them
While I dont think this card has what it takes to make it competitively, its already a hit with collectors, collecting an impressive market price
As a noncreature spell itself, it plays very nicely in multiples