You can fill the rest with cards you already own to reduce the cost of your deck even further
To the Window, to the Wall Window theory was introduced to me by RebellSon, whose Magic content really gets me thinking about the inner workings of my strategies
Six trample damage, two instances of Bramblecrush and a 5/5 trample left in play is a lot of value
Gleaming Overseer Gleaming Overseer can give a giant Army hexproof, but it also works with generic zombie tokens
Equip Artifact - Equipment Color tag templates(None) Mithril Coat Flash Indestructible When Mithril Coat enters, attach it to target legendary creature you control
In terms of reprint value, Sword of Truth and Justice is doing a lot of the heavy lifting at $35, but even then Umezawa's Jitte is around $15