The minus ability is effectively Abrupt Decay, an ability that Standard decks will be happy to pay four mana for if it leaves behind a planeswalker
Then the equipped dork has first strike and Lure if it's attacked
In Commander, it's absurd: you get four free spells, basically guaranteeing that you'll hit something good
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While for some decks, the graveyard represents cards that have been used or destroyed, for graveyard-focused decks, this zone is capable of functioning as something comparable to a player's second hand
