I've recently made an extremely fast and powerful artifact deck, and I was considering entering a local tournament with it.

LANDS:
4 Darksteel Citadel
4 Ancient Den
4 Seat of the Synod
4 Vault of Whispers
3 Island
2 Swamp
2 Plains

CREATURES:
4 Myr Servitor
4 Phrexyian Walker
4 Orithinopter
2 Loxodon Punisher
2 Qumulox
2 Broodstar
4 Master of Etherium
2 Mephitic Ooze
2 Nim Devourer
2 Nim Shambler

OTHER:
4 Cranial Plating
3 Loxodon Warhammer
3 Whispersilk Cloak
3 Bonesplitter
2 No Dachi
3 Steelshaper's Gift

TOTAL: 69 Cards

The deck's main plan is to jack up my weak, cheap creatures and go on suicide charges to inflict damage. Myr Serviter is excellent for this deck theme, as they can continue to revive themselves for more attacks. Broodstar, Master of Etherium, and my Nim are my main guys who end the game. Loxodon Warhammer can help me heal back any retalation damage I take from my attacks. Steelshaper's Gift can be of vital importance when I need more Cranial Platings and such.

If you have any suggestions, I'd love to hear 'em.