Azorius Hammer (Standard)

The aim of this deck is to equip your creatures with cheap items and then transform them into Colossus Hammer.
This is done with either Masterful Replication to upgrade everyone or with Saheeli, Sublime Artificer to upgrade one at a time.

Renowned Weaponsmith can pull Heart-Piercer Bow out of your library and his mana ability works on both casting and equipping.
Speaking of Heart-Piercer Bow, this combos with Warkite Marauder to take out an opponents creature each attack (baring +1/+1 counters).
Danitha Capashen, Paragon makes all the equipment cheaper and is a good creature to equip due to her keywords.
Sai, Master Thopterist is a good blocker and can create an army of thopters.
Ancestral Blade is a 2/2 creature on curve which comes ready equipped for the combo or leaves an equipment behind when it dies.
Blackblade Reforged is a slightly less effective copy of Colossus Hammer but has a chance to be equipped normally onto a legendary.

Sideboard Guide:
Dovin's Veto for against control.
Seal Away for against aggro.
Sorcerous Spyglass for against planeswalkers.
Slippery Scoundrel for grindy matchups.
Ixalan's Binding for when you need all purpose removal.
Tezzeret, Artifice Master for longer games.
Grafdigger's Cage for against graveyard decks.