As splendiferous a word magniflorious is, its creation is not of my brain. No, it comes to us from the brilliant, twisted, and therefore naturally cancelled before its time, television show Better Off Ted. Magniflorious was among its bountiful quotables... Though one of the few I can call up 'cause I just don't have that kinda recall for film and T.V. dialogue. I quickly adopted it to describe everything good, e.g., This cereal is magniflorious, "You found a quarter? Magniflorious!" Fellow BOT fans always chuckle while those not in the know always ask "What? What does that mean? Spell it." In that order. Always.
Fortunately for those around me I've since refined my use. I now use it for everything really good. By all means, take it as your own. Spread it around. You'll feel, say it with me, magniflorious!