This card has always done so much work as it is almost always cast off of a elemental or large Tireless Tracker
Ive also stacked the deck with enough extra Knights and supporting creatures that I can have as many as three or four creatures in play at any given time, and recur them without too much effort
Pillar Analysis: High Power (Dual Land), Scarcity (Beta, Reserved List), Collector Scarcity
Like the two that followed it, the variants for Kaladesh and Amonkhet , this version had the typical 100 lands, 85 fixed cards, a random set of 40 from a pool of 125 themed cards, and four recently released booster packs
It's that cheap cost that makes it work
If you do, create a token that's a copy of that card and that's tapped and attacking