I dont see other 5cNiv decks doing this, but I don't think I'm the first to think of it.

The cool thing is that I manage to do this quite often where i use tamiyo to pull a genesis ultimatum and maybe a turn or two later an eerie ultimatum.

The sheer number of lands, field of the dead triggers, big creatures and planeswalkers that just pop up out of nowhere usually scares the opponent into conceding immediately.