Tezzeret can untap artifacts to make a lot of mana, tutor out key artifacts like Mana VaultMana Vault or Voltaic KeyVoltaic Key, and has an easy to achieve -7 that slowly weaponizes all the otherwise useless artifacts on the board
Most decks should play a fog, and Blessed Respite is my choice in green
That being said, she can benefit pretty greatly from replacement effects that affect token generation (such as Academy Manufactor) and/or tap-based Stax effects like Stasis (as long as you have the means to untap her)
Then in went Terminate and Murder to off at the speed of sound
This is very intriguing to me, but Im skeptical as to the power level since we wont have access to both black and white with this commander
Notably, this card has no limitations, so if youve spent your turn producing ample Elf tokens or dropping tons of one-drop Elves (both examples with summoning sickness), you can tap them all down for loads of mana