Can I spend Udyr buff to stun a unit at another battlefield?

Question

Accepted Answer

Yes, you can spend Udyr's buff to stun a unit at another battlefield.

Udyr's ability reads: "Spend my buff: Choose one you've not chosen this turn — ... * Stun a unit at a battlefield."

Because the ability specifies "a battlefield" rather than "this battlefield" or "the same battlefield," you are not restricted to targeting units at Udyr's current location. You may target any unit currently located at any battlefield, provided it is a valid target for a stun effect.

**Important Reminders:**
*   **Base Speed:** As an activated ability without the "Action" or "Reaction" keyword, you must activate this during your turn while there is no chain or showdown (Rule 701/FAQ).
*   **Targeting:** You cannot target units in a base; the target must be at a battlefield.
*   **Already Stunned:** Per Rule 410.1.a.1, you cannot stun a unit that is already stunned. While you can target an already-stunned unit with the effect, the stun will not apply.