This article includes minor spoilers for WandaVision.

After easing into Phase 4 of the Marvel Cinematic Universe with the first two episodes of WandaVision, the third installment in the series finally gave a tease of just how insane this show is set to be.

The 1970s-inspired plot brought more than its fair share of laughs and entertaining moments, while the show's central couple found a way to endure a nine-month pregnancy in the span of just a couple of days! 

Episode 3, titled "Now In Color," largely focused on Wanda Maximoff's speedy pregnancy before giving birth to her and Vision's twin sons, and that doesn't even take into account the reveals in the episode's last few minutes that truly set the plot into the MCU's storyline.

As Wanda is talking to Geraldine (Monica Rambeau), she reveals that she shares twin status with her two newborns before singing them their first lullaby.

As has been the case with nearly every second of footage unveiled thus far, international subtitles reveal the meaning behind this serenading song.

SOKOVIAN SONG INCLUDES PHOTON EASTER EGG 

When watching the third episode of WandaVision with Portuguese subtitles, Wanda Maximoff's Sokovian lullaby is actually translated into Portuguese (a treat that viewers watching in English didn't get).

When the Portuguese is translated into English, it reads as follows:

I waited for you 

and this day has come.

My heart became a home full of light, 

full of light.

FULL OF LIGHT

On first glance, this lullaby from Wanda simply seems to be something from her own memory growing up in Sokovia that she passes on to the next generation. However, when taking into account that this is in fact the MCU, nothing can be disregarded that easily, considering the Easter eggs and teases that could potentially lay in any dialogue or set pieces.

In the lullaby, the mention of "light" seems to connect directly back to Monica Rambeau, who eventually takes on the superhero mantle of Photon in the comics. As a superhero, her powers are often light-based as she is able to convert her body into a number of different energy forms. 

What makes this important is that Wanda is singing to her babies while standing beside Monica Rambeau, who is confirmed to evolve into a hero through her appearances in this series and eventually Captain Marvel 2. The specifics of her journey are still under wraps, but her transition from SWORD agent to superhero will surely be something to keep an eye on over the next six weeks.

The clues are getting bigger, and the excitement is rising. Hopefully fans will get to learn more about Monica in "Episode 4" of WandaVision, which premieres on Disney+ on Friday, January 29.