If an opponent plays Noxian Drummer and I respond to its trigger with Gust to return the Drummer to hand, does the Drummer still move the 1 might recruit token to the battlefield?

Ruling: No, the token will not be moved to the battlefield. When Gust returns the Drummer to hand before the trigger resolves, "here" becomes undefined, so the ability cannot execute the instruction that references "here".

Sequence:

• Noxian Drummer moves to the battlefield
• Drummer's "when" trigger goes on the chain
• Opponent can play reaction spells in response (like Gust)
• If Gust returns Drummer to hand, the trigger still resolves but "here" is undefined
• The ability fails to move the token because it cannot determine where "here" is

Nuances:

• All referents in an ability's instructions need to be defined for the ability to execute
• Legality is checked both at finalize and at resolution in Riftbound
• This principle applies to other cards as well (e.g., if you Gust a unit in response to Hidden Blade targeting it, the Hidden Blade player won't draw because "its controller" is undefined)