Rotating Fireplace fits any color identity, and here's a good example of a card that wants you to add time counters to it, rather than remove them
The five decks included Izzet spells matters, Simic +1/+1 counters, Golgari reanimation, an off-putting Boros aggro-midrange deck that was wildly inconsistent, and Orzhov enchantments
It doesn't copy whether that artifact is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, or any non-copy effects that have changed its power, toughness, types, color, and so on
As it enters the battlefield, you can discard any number of Creature cards
It was only available inside random booster packs of the SM#10 Double blaze series that was released in Japan, in March, 2019
Two other notes on Verminister: While youll reanimate Rat Colony 90% of the time, the ability is in no way restricted to rats or creatures you have duplicates of in the graveyard