rivendell mtg card Library of (V1 11) If this is the second time this ability has resolved this turn Elrond, Lord of Rivendell

It gives you an extra draw each turn and your opponent the option to draw or attack you

They are a step up from buying a few individual packs without committing to a full booster box

So, what is it that's caused such a significant price decrease in such a short amount of time

The ones I listed do vary in power level, some definitely not at the same competitive level as the ones you mentioned, but I believe having a card speed up any combo general by three turns is not something to be underestimated with

The attack trigger's worded in such a way that you could give your teammate extra tokens when they attacked with Warriors