Many artifacts do nothing on the battlefield, but are played for their effects, such as Ichor Wellspring
BUILDS The Seven Warlords of the Sea Dracule Mihawk The Worlds Greatest Swordsman Overwhelm your opponent with powerful effects
This, combined with our commander, Wilhelt, the Rotcleaver + an infinite sac outlet like Carrion Feeder allows us to sacrifice zombies infinite times, then pair with a drain outlet like Diregraf Captain for infinite drain
I built a deck after buying all the pieces, and after getting a lock down in a 5 player game, the academy player shouted 'that card should be banned'
The tokens are exact copies of the creature, so they retain its ability to duplicate further, meaning you get exponential growth if you can continue to draw extra cards