The ability won't be worth fighting for graveyard fuel
I think its something about how non-plussed the Goblin is, and how center-frame the amputation is, vs
Players alternate attacking until a player wins either through one of the above win conditions or by concession
Xanathar can do a wide variety of strategies decently well just like a lot of other commanders, but its main ability allows you to lock opponents out, which is as powerful for you as it is annoying for them
The ability is strong within low-cost creature decks, and the Instant could shine within an RW build that splashes Green or through RG Delirum Stompy
Revised was the first set to change things like adding the tap symbol and removing game terms like mono artifact, poly artifact, and continuous artifact. Another way to differentiate these sets is by little differences in art, the colors used, and the type of ink