This is not your average storm deck.
All the creatures in this deck will cost 0 and instantly die after being summoned due to Heartless Summoning, and when they die Fecundity will let you draw a card.
You can semi-infinitely play and draw myrs to raise your storm count for the finishing Grapeshot.
Here's the other tools:
-The searchers
Shred Memory grabs Heartless Summoning, Grapeshot, or Myr Retriever.
Beseech the Queen grabs anything.
-The Creatures
Copper Myr and Leaden Myr give you some mana if you don't draw enough.
Hangarback Walker lets you draw 2 cards
Perilous Myr does damage to the opponent, lowering the amount of storm needed, or it can kill disruptive creatures.
Myr Moonvessel gives you mana upon death, and you can convert it to red mana with Chromatic Star for your Grapeshot.
Grim Haruspex acts like another Fecundity, except Heartless Summoning makes him cost 1, and he dies alot easier.
Myr Retriever is a main card of the deck. with 2 of them, you can constantly play and retrieve them with Heartless Summoning, and get infinite storm count for Grapeshot, or infinite cards with Fecundity.
-The Lands
Every land in here needs to tap for black mana to cast Beseech the Queen and the transmute costs.
Any advice on how to improve this deck would be greatly appreciated.
Found a turn 2 win.
Hand by turn 2: Heartless Summoning, Chromatic Star, 2 Myr Retriever, 2 land, 1 Myr Moonvessel, Grapeshot
Turn 1 - land, play Chromatic Star
Turn 2 - land, play Heartless Summoning, play Myr Moonvessel, it dies, and you get 1 mana.
Play Myr Retriever, it dies and gets back Myr Moonvessel, play another Myr Retriever, get back the other one. Repeat until storm is high enough.
Play Myr Moonvessel again, you now have 2 mana floating, use 1 of that mana to use Chromatic Star for red mana, play Grapeshot.
win.
That combo is rare though.
p.s. the majority of the deck's price comes from lands, you could use stuff like Vivid Marsh, Savage Lands, Sulfurous Springs, or Llanowar Wastes.