This makes all of your Rats much better in combat, forcing your opponents to trade their creatures if they want to block a Rat, which will then give you more Rat tokens as another creature dies.
Their second ability gives one artifact creature lifelink and vigilance, which can help buffer your life total while you go on the offensive
others say its lazy and doesnt fit in the game
However, although Trekking Shoes does not have the benefit of attaching an Energy if it is the card that Trekking Shoes draws into, Trekking Shoes can dig one additional card deeper if the player chooses to discard the first card they drew off of it
It can be oppressive, especially in decks with access to large amount of draw (anything Simic, usually), and Ive found often locks one player out of the game whilst the players with the more durdly value engines have time to set up their less attention-seeking pieces