Do what youre doing already, get a Servo for free
The most famous example is the Illustrator Pikachu, a card released in the 1990s that routinely goes on auction for millions of dollars thanks to its limited release
His Willpower is a modest 4, however, so while this can be good for getting extra Lore near the end of the game, I'm not quite sold that it's a good card to play early on, especially on its own
However, the ultimate can be attained with relative ease when compared to other planeswalkers
Any time a creature has more than one Role controlled by the same player attached to it, the creature keeps the newest Role and all the others controlled by that player are put into the graveyard (and then cease to exist as they're tokens)
The five-drop dork in red with an okay 5/4 size and then in your upkeep each player will exile cards each the top cards from their library until they exile a good nonland and you can cast two for free