Cheap commanders that can become formidable threats on the battlefield, as Yahenni does thanks to its counters, can provide pressure throughout the game especially since Yahenni acts as a combo enabler and payoff in one
Treasure Mage is a long long way from Trinket Mage and sees very little play
Izzet Lessons Izzet Lessons is an emerging deck that appeared alongside the return of lesson spells in Avatar: The Last Airbender
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
Boromir, Gondor's Hope, Riders of Rohan, Lossarnach Captain, and some of the cards Ive already mentioned for monarch all bring some new support for the tribe
How Do You Play Jump Scare