, Return a land you control to its owner's hand: Return target artifact or enchantment card with mana value X or less from your graveyard to the battlefield
In response to player feedback strongly in favor of black-bordered cards, Wizards reserved for themselves the right to reprint cards from Mercadian Masques and later sets with black borders, rather than white
If there's a cost associated with blocking the target creature, the defending player isn't forced to pay that cost, so it doesn't have to be blocked in that case either
A different version could add Tracker's Instincts, Eureka Moment, and Channel the Suns to a blue-green Tolabow deck, but you could not add Joint Exploration to that same deck, since it adds to your deck's color identity without using the second color in its mana cost
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