I was playing an intense game of legacy. UWr Landstill vs UBg Landstill and something interrupted the casual match. There was no judge around so I'll ask you guys: What happens when your opponent plays force of will on your magus of the moon (or whatever) and I play Divert redirecting his force of will to target my divert? If the counter resolves, then the effect of my divert will also be countered or will it cancel out?

If it does work, do you think that Divert is a playable card in legacy? It sure was unexpected...