Madison Li multiple times a turn cycle
You have to either convince your opponent that the artifacts you have in play are your best ones (by holding the ones you really want) or force them to destroy ones they probably dont want to kill (with cards like Spellskite and Welding Jar)
To summarize, a deck full of deathtouch creatures is going to have enhanced defensive capabilities than most other decks, and dealing poison damage means you've got a leg-up in the damage race
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Don't forget there's an entire deck dedicated to the glorious villains of the show, and they'd love nothing more than to force your opponents to face villainous choices
Youre not always gonna want to tap your creatures to make mana, as that can be a very real cost, but at least this can also produce colorless mana normally, it has useful typing as both an artifact and a clue, and you can of course throw it away for a card