The event lasts until Tuesday the 19th. You play Bo1 games with 60-card decks using cards from GRN, RNA, WAR, and MKM, and you're not restricted to cards in your collection.
About
Name Ravnica Flash
Deck
7 Island
7 Plains
4 Hallowed Fountain
4 Meticulous Archive
2 Mobilized District
1 Cryptex
4 Doorkeeper Thrull
4 Deduce
4 No More Lies
4 Sinister Sabotage
4 Absorb
2 Teferi, Time Raveler
2 Chemister's Insight
4 Warrant // Warden
2 Intrude on the Mind
3 Time Wipe
2 Commence the Endgame
This one is maybe a little mean for a fairly casual event, but then again maybe not, since I'm seeing a lot of people play similar decks. I don't know; I just seem to gravitate to blue decks where you can play most of your cards on your opponent's turn. You actually have several options for curve-toppers here; consider [[Dream Eater]] or [[Angel of Grace]] as alternatives to the ones I went with.
About
Name 2 Massacre 2 Girl
Deck
6 Swamp
4 Plains
4 Godless Shrine
4 Shadowy Backstreet
3 Escape Tunnel
2 Blast Zone
1 Mobilized District
2 Price of Betrayal
4 Dead Weight
4 Hunted Witness
4 Imperious Oligarch
4 Despark
2 Bleeding Edge
1 Kaya, Spirits' Justice
4 Massacre Girl
4 Massacre Girl, Known Killer
3 Ethereal Absolution
4 Slice from the Shadows
You can play both Massacre Girls in this format, how cool is that? I got this idea from an opponent but I didn't remember their deck well enough to copy it. I think they had a lifegain focus. Mine is basically just toughness-based control. Be careful how you stack your triggers! Sometimes you want your tokens to come into play in time to die. The two Prices of Betrayal are a nod to our bad match-up against Superfriends decks, which understandably are pretty popular in a format where War of the Spark is a quarter of the card pool.