mtg plane cards in commander Magic: The Gathering March of The Machine Deck and/or black become artifacts in addition to other types until end of turn Kingdom Hearts custom Planechase card:

Inventors Fair is a historic tutor in your mana base that also gains you some incidental life

Im also just a fan of Borderland Ranger, though its convincingly weaker than both of these cards and will be more of a card specifically for low-power Cubes

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This gives you a free spell to cast from your opponent's deck and that is simply never a bad thing, all while pumping up his loyalty