Its a balancing effect, which is why its in pretty much every deck, as it allows you to get the upper hand when in dire straits
Should you have utility dorks like Mother of Runes you need to turn those off which is another risk
Its a design space that hasnt been explored all that much, and I think Toph immediately asserts herself as the best land creature Commander
Self-mill has been a reoccurring draft archetype for years, giving us great budget staples for the deck
For instance, if the opponent is primarily using Water-type monsters, the player fills his deck with Thunder-type monsters and the duel is pretty much over
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