Force Mage Mage: Overpowering Missile vs Shield Reflexivo?

Uma pergunta um pouco excêntrica. Digamos que eu tenha dois Sorc 10 / Force Missile Mage 5. Digamos apenas.

Ambos têm um míssil avassalador:

Overpowering Missile: At third level, the force missile mage's magic missile spells become especially potent, breaking through spell resistance more readily than normal. She gains a +2 bonus on caster level checks to overcome a creature's sell resistance with the spell magic missile. This benefit only applies to magic missile spells she casts. In addition, a force missile mage's magic missiles penetrate shield spells and brooches of shielding as if they didn't offer protection from the spell.

e, ambos têm Escudo Refletivo :

Reflective Shield (Sp): At fourth level, a force missile mage becomes immune to the spell magic missile. For the purposes of being affected by magic missile, a force missile mage is constantly treated as under the effect of spell turning, thus reflecting offensive magic missiles back at their caster. If that caster is protected by the shield spell or a brooch of shielding these reflected missiles are negated. Missiles reflected against a caster who also has a spell turning in effect require the force missile mage to roll on the spell turning mishap chart (PHB 283).

Então, dado que eles estão jogando Mísseis Mágicos um no outro (eles não são tão brilhantes assim), como eles interagem? Eles funcionariam normalmente, os dois jogadores teriam que rolar no gráfico de infelicidade giro de feitiços , ou simplesmente cancelariam tudo?