Sure, it's only once a turn, but it's also capable of triggering on your opponents turns, making it wildly good in Commander, where you have three other people playing
Illustrated by Dan Dos Santos Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Legal Brawl Not Legal Legacy Legal Comp
Once you get there, it starts to run away with the game -- but I don't love how this starts
Tap: You get E, then you may pay one or more E
Howling Mine Howling Mine (and similar iterations like Dictate of Kruphix or Kami of the Crescent Moon) is central to whats known at Commander tables as group hug. In Commander lingo, thats cards that provide a benefit to one or several of your opponents
On an Adventure Card was first released in the set Throne of Eldraine Tokens, illustrated by Adam Paquette