There are some issues with this deck, like "what do I do about creatureless or hexproof decks?"
Well, first you probably die. THEN you open your sideboard.
Now, take out all those creature enchantment cards, the 4x Journey to Nowhere and the 4x Oppressive Rays.
Put in some sideboard enchantments.
BAM! Totally different deck. You now have HUGE lifegain (4x
Lifelink, 2x
Sunspring Expedition), and protection for your critters (2x
Pentarch Ward).
For Burn or "Red Deck Wins" types, do the above, and also swap out the 4x Oblivion Rings for 2x
Rune of Protection: Red and the the other 2x
Pentarch Ward.
In other cases,
Nihil Spellbomb is really nice to break out against dredge/delve decks, and
Holy Light is a nuke for overwhelming creature decks.
All these cards, of course, have other uses, but they mostly speak for themselves.