Grustrag Three during event

[CafetaoChamadoMaciota]

Do I have to painstakingly get 3 Marks from the trio by doing invasions (and then waiting for them to end), or did DE make them a random encounter without requirement during the event?

[Lunaris]

During the event G3 has a higher chance of spawning then normal and it does not require any marks.

Keep in mind that event g3s do not share the drop table of the normal G3 and it will drop absolutely nothing, nada.

But having a G3 mark Increases the chance of spawning

 

[FoxtrotPT]

They come whether youre marked or not

For me they came every few (grineer) missions

[Kalvorax]

I got lucky and had everything done before the g3 hunting.....and did 3 missions and had them spawn on all 3...was done with that req within 15 minutes....i swapped between the 2 sabotage missions on Saturn...and oddly enough the destroy the mining vehicles both changed to exterminates, right before the g3 messages happened.

[CanuckinKorea]

Do they only spawn in Grineer missions? I spent all afternoon leveling new frames at Helene, Saturn, not a single spawn, but i did see Stalker twice...lol.

[JuanS]

Do invasion missions against grinners, they spawned every 2 missions for me.