But its flexibility in costing one mana to do two different things makes it intriguing for several commanders
3 Elesh Norn, Grand Cenobite (Rainbow Foil Mythic, Secret Lair Bonus 811) $622.80 Wanted, Dead Or Alive The iconic now-gone, Phyrexian leader of New Phyrexia, Elesh Norn, has been a highlight of many cards across her conquering history and not even the Secret Lair drops are safe from her dominating grasp
These include cards from previous Magic sets, but there are certainly cards in the main Tales of Middle-earth set that could improve each of the decks if you want to keep them as flavorfully thematic as possible
Exiling the card from your graveyard is part of the cost, so once scavenge has been activated, its too late for your opponent to try to get the card out of your graveyard to stop the scavenge
But it's still Balance
This makes at least one player less likely to want that creature removed than if you put the aura on your own creature