You can use it on an opposing Commander which is legendary to half its power and toughness to double the turns needed to kill you with Commander Damage due to the legendary rule one copy would die
The Rob Lucci deck uses cost-reduction cards to put Characters in range for your KO cards to remove them
This white creatures basically just Make a Stand that synergizes with cards that care about spirits, knights, and creatures in general
You might want to save it a turn against a 1-power critter
P/T Number 166 Language English Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Timeless, Vintage Not Legal Formats Alchemy, Modern, Pauper, Pioneer, Standard