If Cleave is on the stack and the opponent has Stupify and Gust, can you use Gust on a 4 Might unit after using Stupify to make it a legal target?

Ruling: You cannot cast Gust on a 4 Might unit before Stupify resolves because it is not a legal target. You must cast Stupify, let it resolve completely, then cast Gust before Cleave resolves.

Sequence:

• Cleave is cast (first on stack)
• Stupify is cast in response
• Stupify resolves (unit is now a legal target for Gust)
• Priority passes back to players
• Gust is cast (now targeting the reduced Might unit)
• Gust resolves
• Cleave resolves

Nuances:

• After each card resolves, the next link owner gets priority and both players must pass before the next link resolves
• Players can continue adding to the stack as cards resolve, not just when the stack is first created