Most notably, if a triggered ability asks its controller to pay a cost, you pay that cost for the copy if you wish to have it paid
Playing this in response to a Dockside Extortionist might also change how the remainder of someones turn plays out
As Tarkir draft settled, there ended up being two basic strategies: play red-white aggro or play a green-based four- or five-color strategy
Otherwise, it's another Winterspell card that Collectors are bound to be all over, and chasing as for it as hard as they can
O-Naginata (2XM foil 50, SOK foil $5) I wish there was a sweet version of this to go after, but again, adding three power is where both legends are happiest and this time it is as cheap as can be, no need for ways to cheat the equip cost