Introduction

This is quite a unique list, using spells, spell damage and overload synergy to gain early game tempo and burst your opponent down with supercharged spells. Your opponents will never expect this list, until they get bursted down by a huge Squallhunter + Lightning Bolt + Lightning Bolt combo.

Mulligan

Since it's a tempo-oriented deck, the most important part is to have a strong start. That's why you want to have either of these in the opening hand:

Blazing Battlemage

Sludge Slurper

Surging Tempest

If you have these in your hand, try searching for some of the following:

Rustsworn Initiate

Imprisoned Vilefiend

Serpentshrine Portal

These will cement your early-game hold on the board and help you transition into your strong midgame, after which you can burst down your opponent's. The deck's strongest turn is turn 3, so you want a strong board by that turn so you can snowball and hopefully play Squallhunter on 4.

Card substitutions

This is a very cheap deck, with only 2 legendaries and 2 epics. While these four cards are preferable, they are not essential for the deck to work. If you don't own any, I would replace them with the following cards, in order of priority:

2nd Blazing Battlemage

2nd Frost Shock

Spellbook Binder