Since Deneb basically got vandalblasted, they have to reconstruct their board state. Endless Atlas is an efficient card draw artifact, so hopefully they will get to a good point where they can use it. Their turn ended quickly because of that. Elek's got a nice combo waiting in his hand for quite some time. Now that his angel has lived through a turn, he can do something very silly:

Basically, his Angel of Invention buffs his team up +1/+1. And whenever a creature enters the battlefield, Goldnight Commander buffs everyone else up +1/+1 for each creature that enters. When Marionette Master joins in, she can bring 3 other creatures with her, all of which are artifacts (this part is notable). Combined with the Angel, this means the entire team will be boosted for a total of +5/+5 once Marionette Master comes back. It should also be noted that Elek will have 6 artifact creatures on his side of the field at that point, and he has a sacrifice outlet. Whenever an artifact on your side of the field is sent to the graveyard, Marionette Master deals damage to an opponent equal to her power, which would be 6 in this situation: meaning that with damage distribution Elek can kill off Salrie and Deneb, leaving about 36 total damage for Seglagg. If this works, Elek can win the game.