Wall of Omens A lovely cheap Wall that cantrips, you can't go wrong sticking this in your deck
Battles enter the battlefield with a number of 'defense counters' which work just like loyalty counters, and they go to the graveyard when their defense is depleted
However, fight effects show up reasonably regularly in the format, and can pull a lot of weight in the right decks
It does cost life to do so, and with only 20 starting life, you'll have to be careful not to accidentally burn yourself out of the game, as it's mandatory to do at least one effect
In Elves specifically, Glimpse of Nature made it pretty easy to play through your entire deck on Turn 2 or 3
That means each card that is a reprint is unique, and each of the four sol rings are all unique art