Ugin is flying very high indeed as people want the sweet copy for their colorless decks, and well they should
For strategic advantage and lore gains, consider cards like Pride Lands, Maleficent, or Jafar in your deck lineup
No need to make something that is unnecessarily complicated and likely would cause confusion on the battlefield (keeping track of the negative can get annoying since players are not used to it, particularly if there are +1/+1 counters or other P/T boosts in play)
Jumbo Cactuar costs a ton of mana to cast, plus it has to attack to trigger 10,000 Needles and it does not have haste
Or even Mazirek, Kraul Death PriestMazirek, Kraul Death Priest decks focused on artifacts
All are still played heavily in Commander and other formats today