Confusion over Windsweep and Phantom Spd Combo...?
I’ve been testing out Windsweep and Phantom Spd on Tibarn and he doesn’t seem to double foes when he initiates combat. I think I’m missing something? Tibarn has 31 Spd and Michalis has 33, Tibarn should be able to double him? Or would I need Darting Blow? I really have no idea how to trigger Phantom Spd either, it would be great if someone explains it.
If your intention is to double while canceling the enemy's counter, yes, Spd +3 is probably better.
With characters and builds where you sacrifice your chance to double in order to cancel counters (like a Windsweep F Corrin, for example, to attack and trigger Dark Breath), Phantom Spd is generally better.