The day after I recorded this video set (Monday), I switched over to GB Delirium, a similar yet slightly slower deck. I went 4-1 in a Standard PTQ Preliminary on MTGO, earning myself a Constructed PTQ Finals token. I like the deck more in the current meta because it has a more flexible game plan, which is essential in order to beat the swarm of GB decks floating around. Going slightly bigger with slightly more removal (as well as Traverse the Ulvenwald to find your potent sideboard singletons) is really strong in the field right now. If the format shifts hard toward Mardu Vehicles, I'll consider switching back to GB Energy Constrictor, but for now I like the flexibility of Delirium and the raw power of the slower Mindwrack Demon.