The deck itself has few creatures to attack the opponent, but the vast majority with the potential to become huge as we play our spells. The vast majority of spells will be played on our opponent's turn to keep the game under control.

Non-budget version

We will keep the 4 copies of

Sprite Dragon

and the 4 copies of

Brineborn Cutthroat

. Both creatures grow as we play our spells (Sprite Dragon with our instants and Brineborn Cutthroat because we normally play in our opponent's turn). For the budget version we will add 4 copies of

Crackling Drake

and it will normally be a creature with high power in the late game, not needing to grow like the previous creatures. Since the idea is not to use rare and mythical cards, we removed the 4 copies of

Brazen Borrower // Petty Theft

and

Bonecrusher Giant // Stomp

. Now that we know the creatures that will grow as we play instants, time to move on to the "control" part of the deck. To begin with, let's try to prevent the opponent from playing spells: So, we keep the 2 copies of

Quench

, a great counter in the early game and can be useful in some lategame situations. We also keep the 2 copies of

Negate

which helps a lot against control decks, besides stopping opponent's combos/interactions and protecting us against removals. We added 2 copies of

Essence Scatter

to hold the opponent's creatures. NOTE: although

Essence Capture

is relatively better, the fact that it needs two blue mana in cost makes it more difficult to cast. We replaced the 4 copies of

Ionize

with

Neutralize

, which will normally be used to undo any threat from the opponent. However, if the game is under control it can be recycled to help find more direct answers. In addition to trying to prevent the opponent from casting their spells, we also have some burns to remove creatures that we were unable to counter and to finish the game faster with direct damage. We will keep the 4 copies of

Shock

. We also keep the 2 copies of

Fire Prophecy

that, besides causing damage to creatures we can (that is, optionally), puts a card from our hand at the bottom of our library, serving as a sudo "draw a card" during the mid and late game. And we increased from 2 to 4 copies of

Ral's Outburst

which in addition to causing damage to any target still gives us the card advantage. In addition to the counters and burns, we still keep the 4 copies of

Opt

for that to give a little support to the deck. On the basis of mana we will remove all copies of

Steam Vents

,

Castle Vantress

and

Blast Zone

and add 4 copies of

Swiftwater Cliffs

.Also, we increased from 8 to 12

Island

and from 5 to 8

Mountain

. With these changes we arrive at the following list:

Budget Version

As we can see, the deck is able to control the game well and just fit one or two creatures to finish the game in the meantime. I hope you enjoyed and see you soon.