This card essentially allows players to treat their Graveyard like a second hand , forcing opponents to consider not only what they might play, but also to remember what they've already played when formulating their strategy
While it feels tailor-made for answering threats that are difficult to remove, it can also be used to shuffle any annoying artifact or enchantment back into its owner's library and disrupts the topdeck manipulation that you'll see in many popular decks
Broodmate Dragon is very good at these tasks, because you get not one but two independent good creatures capable of dominating many boards on their own
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Not a bad turn 1 option in Commander
Even Sauron himself has a powerful cast trigger, giving you at least two other creatures, one an Orc token and anything else of your choice from the graveyard