A janky deck that hopes to win with Murmuring Mystic and cheap spells. The goal is simple - flood the board with as many birds as you can poop out while Mystic is on the board and go wide in the sky. Quasiduplicate should only be used to copy Mystic to improve the bird pooping engine. Burning Prophet is really good! The scry is incredibly important for digging through to the cards we need and she can hit for suprising good damage now and then; she almost never feels like dead weight on the board (except when she gets lightning striked -_-). Siren Stormtamer is the perfect 1cmc to enable Wizard's Retort and Winged Words early while providing protection to Prophet and Mystic.

Becasue this deck relies on killing the opponent with 1/1 pidgeons, I've added a Heraldic Banner to really pressure opponents. Select Blue and now you have extra blue mana for things like Retort and your pidgeons become more threatening. I prefer Banner over Favorable Winds because even after a board wipe, Banner is still useful. 

Flame sweep is our prefered board sweeper as it hits basically everything while not killing our stuff. Lava coil is prefered over Scorching Dragonfire or even wizard's lightning for all the big boy stompy creatures. Plus it's a sorcery target for Finale of Promise. I would side out Lava Coil for Dragonfire though if the meta or matches you are coming across are more aggro based as the instant speed is really clutch. It also hits pesky planeswalkers like Teferi-3.  

A few notes: 

• No Castle Vantress in this deck. Frankly you will hardly ever use it's mana ability to scry when Prophet does that for you already and you would rather hold up mana to play other instants or counter spells. Instead, I've included Castle Emberath as it's mana sink is cheaper and buffs the flock of birdos we are sending at the opponent.
• I originally tried this deck with Improbable Alliance added in and more of an emphasis on Draw-2 spells but I found it was trying to do too much at once. Alliance also meant I'd have to give up some removal and I rather much prefer the removal. 
• Sideboard's a mess and this deck is honestly made for BO1. However, I've included some pieces that I'm playtesting with a friend. Namely Scorcing Dragonfire vs Lava Coil vs Wizard's Lightning, and  Negate. I'm also messing around with the number of Quasi and Banners I should have in the deck. 
• Lastly, Ral is in here becasue I like him lol :p. He provides extra scry and protects himself moderately well while pinging the opponent or other planeswalkers! His -2 is hilarious with things like Quasiduplicate and Flame Sweep or ideally Finale of Promise. Also his passive is great when casting FoP, as you get one trigger for FoP, and then an extra 2 triggers for the spells you casted from the grave (basically a free Lightning Strike). If by some miracle you manage to cast FoP for 10RR, then Ral can deal 7 pings of damage hehe.