The "Number 1" sign in the lower-left corner of the card image indicates that this is a 1st Edition card
Your opponent can still destroy the Sword itself with any number of artifact destruction abilities, but artifact removal is relatively rare and can be played around easily
What I like about Imoti, Celebrant of Bounty is that it opens up weird cascade effects with giant stupid cards like Terastodon, Hullbreaker Horror, and Soul of the Harvest
Today, though, it's still having a major impact as one of the strongest card-draw finishers in cEDH and low-to-the-ground decks overflowing with fast mana, where Ad Nauseam can often draw you a massive chunk of your deck, giving you the fuel you need to win the game
Depending on the meta, Shoot the Sheriff can be awesome as a maindeck inclusion in Standard, Pioneer, or even as a sideboard option