You can quest to gain lore, or you can keep them ready to challenge your opponents characters while they are exhausted
Exiling spells with that you can temporarily cast has become reds primary source of card advantage, and Faldorn benefits from it by making tokens of the wolf variety to go along with all the cards you play
Its one bag of marbles, it doesnt need to be empty to add more and it doesnt matter how recently you added a marble to take one out
That is really useful, not to mention the option to crack to blank a graveyard
It doesnt have to be the same opponent or planeswalker that the triggers source is attacking, and the tokens dont both have to attack the same player or planeswalker
Clever Impersonator is excellent any time you have at least an okay board state, but is best used when copying something that will cause a huge amount of ability triggers to go off