Sideboarding Strategy

Decklist from the previous post:
With some modifications: +1 staggershock, +1 island, -2 spell pierce, and some SB changes.

4x Pyromancer Ascension

4x Lightning Bolt
4x Staggershock
4x Burst Lighting

4x Preordain
2x Foresee
4x Into the Roil
4x Treasure Hunt
2x Call to Mind

4x Mana Leak

9x Island
4x Halimar Depths
7x Mountain
4x Scalding Tarn

Sideboard:
4x Pyroclasm
3x Mindbreak Trap (Currently something else, as a placeholder)
3x Demolish
1x Sphinx of Jwar Isle
4 Flashfreeze



Aggro:

+4 Pyroclasm
-4 Burst Lightning

 Valakut Ramp:
+3 Mindbreak Trap
+3 Demolish
+4 Flashfreeze
-4 Mana Leak
-2 Burst Lightning
-4 Lightning Bolt (Or Lightning Bolt, depending on what sort of creature package they have)

RUG control, UW control:
+3 Mindbreak Trap+1 Sphinx of Jwar Isle
-4 Burst Lightning

I'd really appreciate any feedback here.  I'm really not sure of the SB strat.