With three mana, you can play plenty of great commanders, cast tons of mana rocks, and have access to all sorts of other ramp spells
Nordic Beasts, who are closely related to him among the overly peculiar Nordics, have a steady movement, so they are the easiest to get out of Lord of the Aesir
one Shiny Pokmon ex promo card featuring Meowscarada ex, Skeledirge ex or Quaquaval ex
Collect 151 Surprise Slim 151 C Edition
Once you have a complete lock on your opponent, you can use Miss Fortune Sisters [Astral Radiance] to mill through their deck, hopefully hit some important resources, but otherwise get to your deck out win condition quicker
The only cards from the list above that had their characters reprinted in other sets are Baron Sengir and Eron, which were last seen in MTG sets Commander Legends (2020) and Time Spiral (2006), respectively