UW ~Hammerfall~ (Budget) (Casual)

This Deck wants to make use of the combo with Colossus Hammer and Sigarda's Aid and hopes to win on turn 3.
I tried to find substitutes for the important combo pieces, to raise the chance of an early working combo:

• Ogre's Cleaver is a bad Colossus Hammer but +5/+0 is not that bad either.
• To sneak around those way to expensive equip costs wo want to use Sigarda's Aid.
  Kor Outfitter and Brass Squire are slower but can do the same job.

Wincons:
I decided to use Blighted Agent and Slither Blade as evasive creatures to hit hard with the hammer, but nearly any unblockable or evasive creature is good (keep in mind that Colossus Hammer makes the equiped creature lose Flying!! My first choice was Ornithopter over Slither Blade until I remembered that... ^^")

What could a perfect starting hand look like?

1. Island or Port Town
2. Plains or Port Town
3. Blighted Agent (A) or Slither Blade (B)
4. Sigarda's Aid
5. Colossus hammer
6. ???
7. ???

Turn 1:
A - Plains/Port Town into Sigarda's Aid
B - Island/Port Town into Slither Blade

Turn 2:
A - Island/Plains into Blighted Agent
B - Plains/Island into Sigarda's Aid and Colossus Hammer (equip with Sigarda's Aid)
=> Hit for 11 dmg.

Turn 3:
A - drop Colossus Hammer (equip with Sigarda's Aid) => Hit for 11 poison counters and lethal
B - second Hit for 11 dmg and lethal

You are most likely to not have the full combo on your starting hand, so we need protective spells and cards to fix card quality. I decided to use Spell Pierce and Apostle's Blessing (can be cast on artifacts too !!) with Brainstorm and Impulse. Of course similar cards are okay too as long as the costs are low.

The remaining slots are filled with removal. Baffling End can be exchanged with everything else for 2 mana which stops your opponents creatures.

The Manabase is budget but can be upgraded if wanted.

Please feel free to suggest other/better cards to use or comment what to make better in general.

Have fun playing :D