As a result, you become tough to kill as you are generating so much life
With other complementary artifact mana sources like Thran Dynamo and Grim Monolith, decks could count on being able to get the kind of mana you'd need to justify packing the cards that would let you use the mana from Metalworker to deliver the knockout blow, and their presence lets you turn that Metalworker mana into permanent giant amounts of mana rather than just a one shot deal
HP Heavily Played: You wouldn't choose these first, but many valuable vintage cards have seen substantial wear and tear over their lifetimes
Similar treachery can be performed with Wishclaw Talisman by using a card like Brooding Saurian, but unlike Scheming Symmetry, the talisman is usually a better fit for table politics for a couple reasons
Not much has changed between 2015 and now
See pictures below: IMG_20240124_10182119202560 332 KB IMG_20240124_10182419202560 300 KB IMG_20240124_10215519201440 141 KB IMG_20240124_10220719202560 272 KB Here you can see a direct comparision compared to a normal black star holo Mew promo: IMG_20240124_10211819201440 314 KB If anyone has any thoughts or knowledge on this I would be interested to hear