Theres a lot of confusion regarding targeting, what happens to merged creatures, and plenty of other interactions
On the other side, the Merfolk deck runs Master of Waves and more control spells
But where Storm of Saruman stands out is that its not just certain spell types, like Swarm Intelligence or Reflections of Littjara
Dimir Reanimator was heavily played over the other decks, and it had a middling win rate but had three Top 8 appearances
The Twelfth Doctor grants the Demonstrate ability to any spell cast from outside the players hand, which allows both the player and their opponents to copy the spell
With the help of cards like Cosmic Intervention, Teleportation Circle, and Ephemerate, it's clear this sort of deck has been getting a lot of love over the last few years