A comment noted that this is supposedly referencing something from Warframe, those who play the game will have to confirm or not...

pc88 said in comment #2594472:

A comment noted that this is supposedly referencing something from Warframe, those who play the game will have to confirm or not...

Well, for one it could be Khora's skill summoning Venari. Or it could be Sevagoth's Reap skill. Or it could be Wukong's hold version of the clone attack...it could be a whole lot, actually.

Looks more like a reference to the iconic pose of Jotarou summoning Star Platinum

Rathurue said in comment #2594477:

Well, for one it could be Khora's skill summoning Venari. Or it could be Sevagoth's Reap skill. Or it could be Wukong's hold version of the clone attack...it could be a whole lot, actually.

I believe it's specifically referencing Eleanor's scene towards the end of The Hex quest, in Warframe 1999. However, I feel like the Warframe scene itself may be a reference to the Jojo scene, as noted by @Myhel (Especially considering Rebecca Ford, the creative director of Warframe, is a huge Jojo fan herself.)

Where did she get a whistle from