The main reason to run towns are town payoffs, or cards that care about towns like Balamb Garden, SeeD Academy or The Wandering Minstrel
Thanks to this, it should be no surprise that this card has been in incredibly high demand since Aetherdrift was released
Even better, Gitaxian probe replaces itself, making the action as free as possible, The only thing you lose is two life
Whispers of the Muse (T1, Ext, S, Block) A favorite in "Turbo Xerox" (a blue deck which used minimal land but a ton of cantrips to thin out the deck), Counter-Phoenix (Shard Phoenix + Forbid) and Tradewind-Awakening (put Awakening on the stack, tap all your lands for mana, untap all your lands), Whispers has what might seem like a hefty price to pay for one card but you get to do it turn after turn after turn
[P-128] Portgas D
Giving those animated treasures Vigilance is truly the icing on the cake