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This actually looks pretty solid, especially since you just started out. The deck obviously has some synergy and looks like it curves out nicely. There is some chaff that you could cut though.

Tablet of the Guilds and Angel's Mercy don't really go with your plan. Try Nearheath Pilgrim or Alabaster Mage if you want some lifegain.

Ring of Thune could be substituted for some better equipment. Bonesplitter and Trusty Machete are always safe options. Silver-Inlaid Dagger and Butcher's Cleaver have a good Human theme.

Safe passage would probably be better replaced by an effect like Blinding Beam , Repel the Darkness , or Niveous Wisps . Safe Passage doesn't help you much if your opponent plays creatures much bigger than your own.

Glorious charge is just not enough bang for your buck. I'd either take it out or substitute it with a stronger offensive buff like Dynacharge .

Arrest would probably just be better as more Oblivion Ring .

Commander's Authority seems a bit slow. One problem with it is that you'll spend five mana to attach it, and then if they just Doom Blade your creature or something you're in a pretty bad position.

Gather the Townsfolk and Increasing Devotion are both more efficient than Captain's Call and make Human tokens.

Pillar of Flame would be better as Lightning Bolt , or just more Incinerate if you have them on hand. The ability to hit players is indispensable.

You don't want Manic Vandal because he can destroy your own equipment. Try Devout Witness instead.

Boros Garrison and Slayers' Stronghold would also be good in the deck.

Also the deck could use some more cheap creatures. The more cheap creatures you have the better cards like Riot Ringleader , Azorius Justiciar , Angel of Jubilation , Goldnight Commander , Crusader of Odric , Odric, Master Tactician , Vigilante Justice , and Cathars' Crusade get.

If you really have no budget then Stoneforge Mystic with Umezawa's Jitte or Swords can be good. Lightning Helix , Swords to Plowshares , and Lightning Bolt are all really strong removal. Elspeth, Knight-Errant is also really strong. There's Mother of Runes to protect your creatures (she's a human too). There are also an assortment of expensive lands like Plateau , Sacred Foundry , Arid Mesa , and Clifftop Retreat that are good.

All that stuff is quite pricey though. You should only get it if you really want it.

If you're putting in Mystics it would be better to run different kinds of equipment. Like it might be nice to have the option of a different Sword, Sword of Feast and Famine and Sword of Fire and Ice are both amazing.

Crusader of Odric , Odric, Master Tactician , Angel of Jubilation , Archangel of Strife , and your equipment all want you to play more cheap creatures. You only have four one drops ( Elite Vanguard ) and six two drops ( Gather the Townsfolk and Stoneforge Mystic ). Not enough.

I don't really see the point of Hallow , it's only good if you know you're going to be playing against straight burn decks. Play Nearheath Pilgrim if you really want some lifegain. Lone Missionary , Aven Riftwatcher , and Kitchen Finks are good options with the Emancipation Angel , since you can replay them.