Ultron: I’m playing Spider-Man, facing Ultron II. Ultron attacks me. Which happens first – Ultron’s Forced “when…

There is no timing difference between “attacks” and “initiates an attack” so the Forced Interrupt would take priority over the Interrupt. We used the “initiates an attack” language with Spider-man because early testers showed some confusion about when to trigger his ability, and phrasing it this way helped them to understand.

-Caleb