One of the most common archetypes players will gravitate towards remains the famous Group Hug deck
In general, looting a card back to the top of your deck is worse than discarding a card (since you can't take advantage of any graveyard synergies), which means the +1 is only powerful with a very narrow subset of cards (things like Miracles)
This is another one that makes perfect sense to me, and I dont have any meaningful argument against, save that it is so expensive that those who cast it have earned it, no matter the power level
Token Triumph (Green-White) Build an unstoppable army with token creatures
Well, plenty of decks in Innistrad Block Constructed were extremely light on threats, and what interaction did exist left a lot to be desired
Its not bad for delirium decks, or for decks that want a critical mass of artifacts, either