Avengers: Terminus War Doesn't Have The Same Ring To It Due to licensing issues with Marvel, Magic: The Gathering Arena isn't getting the Spider-Man set
The real payoff is the second ability, which rewards you for connecting with your biggest attacker
This is particularly exciting with all the mana Myrs, providing a lot of mana ramp broken up between your pre- and postcombat main phases
However, this will be a blast with hydras in formats like Commander
In the middle rounds, you can sit back and control with cards like Prismari Command or set up your big interactions with cards like Ojer Pakpatiq, Deepest Epoch
I'll generally run between ten and fourteen creatures to make sure that I can get enough mileage out of my Spider Spawnings and Gnaw to the Bones (and so I can actually kill my opponents with creatures if it comes to that)