The Greaves protect your most important creatures (typically your commander), the Plate does that but even stronger by giving your creature protection from colored spells (wow!), and Shadowspear not only ensures that your damage connects but also that you keep your life nice and padded as well
Flare of Fortitude Chief: This card does an amazing job protecting your permanents and your life total, which seems totally reasonable at four mana and absolutely cracked at the low cost of sacrificing a nontoken white creature
Typically, when you think of extra turn spells, blue comes to mind, and while most of the best extra turn spells in Magic are blue (all the way back to the original Time Walk), there is a slightly lesser known subset of extra-turn spells that are red
Put X +1/+1 counters on it, where X is the number of growth counters on this enchantment
But its been causing a number of problems