I wanted to see this scene happen so bad that I wished sometimes Eternal did actually work like a series.
"The Senshi go to the Dead Moon Circus where they begin to investigate. Rei goes to the mirror house while the rest go to the main tent. The audience in the main tent begins to become hypnotized even the Sailor Senshi including Usagi and Mamoru, and the exits vanish. Rei is trapped in the mirror house where she begins to see visions of herself and how she should give up being a Senshi and focus on her own goals. Rei resists the visions and tries to transform, only to find out that she can't, and is injured when PallaPalla sends Tiger's Eye, in his tiger form, to kill her."
Phobos and Deimos take action to save their master. They break into the house of mirrors and attack Tiger's Eye. They take on human forms, telling her she needs to save her friends and present her with the Mars Crystal. Rei transforms into Sailor Mars and is presented with the Mars Arrow. Using Mars Flame Sniper, Rei destroys Tiger's Eye and the Mirror House and saves her friends.