I do understand the presence of threatening Vehicles may deter some from using conditional countermagic, but having this spell at our disposal still adds a great deal of depth during the deckbuilding process
In Fifth Dawn (2004), five years after the previous example, a colorless card received this ability, although with quite a high activation cost (and the creature itself is quite expensive for what it does as well)

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It gives them more options to win the game or answer any of my cards
There's no need to worry about random encounters
Effects that modify the creature's power and/or toughness, such as the effect of Wing It, will apply to the creature no matter when they started to take effect