This is more than I know how to handle
Kataki, War's Wage and Gorilla Shaman are examples of some cards that deal with a lot of artifacts
The -2 ability is absurd in Commander, where you only have to sacrifice two creatures to get rid of six
More common are kinds that change a type based on flavor, like converting something to a vampire with New Blood, resurrecting a hero as an angel warrior with Ascent of the Worthy, cursing the greedy to become, um, walls with Aurification, or resurrecting cards as zombies with Dread Slaver
Not only that, but it can be transformed for one mana
The Best Removal, Color by Color in Commander The Best Targeted Removal Spells in Magic: The Gathering Commander In Magic: The Gathering Commander format, removal is survival and the best targeted removal answers threats efficiently and at instant speed before they spiral out of control