It doesnt have to tap to use its ability, and it doesnt care how your opponents lost life when giving out extra colorless mana
Well my first thought was to alter the Shambling Strider, but I guess thats already the wildfire wolfcould be fun to do Karn as a set of silver tableware (serving platters, cutlery, candelabras, pitchers) assembled into a golem by a raccoon
Of course, thats a bit of a more out-there version of how this card could be used
I really like that Caesar, Legion's Emperor produces its own sacrifice fodder, so you only need one good card to feed into it before things really get rolling
I'm interested in more cards to support coin flip decks in the future since it has its own Secret Lair deck dedicated to it
2: Return target creature card with mana value 3 or less from your graveyard to the battlefield