It was intended to be a quick way to protect a creature about to die blocked in combat
Amonkhet and Ikoria The first nod in favor of possibly playing 15 or fewer lands is if youre playing Amonkhet or Ikoria draft
The Other Great Rings If you're unfamiliar with The Lord of the Rings, there were a total of 20 great rings forged - Three were given to the Elves, Seven to the Dwarves, and Nine were given to Men
Many players create showcase versions of Commander staples, custom cube cards, anime alters, borderless artwork, full-art lands, personalized commanders, and fan-made Secret Lair-style cards for casual play and collecting
some planeswalkers and special cards qualify too
"Pokmon 2009 TCG World Championship Report by Pablo Meza"