You Hear Something on Watch
A modal instant that splits along the line combat itself draws: attacking or defending. Set Off Traps points five damage at a single attacking creature, enough to kill nearly anything that swings into you, and it lives in the defender's window: pass with two untapped, dare the crackback, and spring the removal once attackers are declared. Rouse the Party fires on your own offensive instead, an anthem that converts a wide attack into lethal or pushes your team through blockers before damage. The two halves share both a timing window and a mana cost; that's the economy the card is trading on. Two open mana threatens either the pump on your swing or the removal on theirs, and reading which one you're holding means reading your posture at the table. White has long had access to both team pump and cheap spot removal, but bundling them into one two-mode instant is less common than you'd think: the color usually spends those effects on separate cards, so folding them into a single held-back trick is what makes this feel more efficient than either mode alone. The flavor lands without strain: a night watch either rallies the party or springs the ambush, both of them what happens when someone hears movement in the dark and has to decide, right now, whether to charge or lie in wait.
