So far we know that the throwing of the ring into the fires of Mount Doom will be one, and The Battle of the Pennor Fields is another
You make extensive use of the graveyard as a secondary value engine, with a number of cards that utilize abilities like flashback, encore, or escape to keep you flush with options
However, despite its excellent condition, other, rarer trainer promos have sold for far higher prices
For example, Katara's last ability will count experience counters that you got from the first ability, from another ability, from another copy of Katara, Waterbending Master, and so on
Its not super-great in multiplayer Magic, but it makes good use of spare lands later in the game to take care of a lot of relevant targets
He can quest for two, but he can also keep the team healthy