It doesn't matter if those spells resolved, didn't resolve, were countered, or are still on the stack
If you recall from my recent Modern Horizons 3, Top Ten (it's here -Top Ten Cards from Modern Horizons 3 | Article by Abe Sargent (coolstuffinc.com)) at my #2 spot was the Flare cycle, and I named Flare of Cultivation new Cultivate that can be free the clear best of the cycle
If I somehow come across one in the future Ill let you know, but unfortunately Grimer/Muk arent really popular Pokmon to put in the background of other cards
The reason this ability is so powerful is that if you have a way to untap an artifact, such as a Voltaic Key, youre then able to draw multiple cards a turn
Kalitas, Chandra, Sorin are all taking 5-6 turns
Neo Genesis is the first set for which I believe there are such artificial rarity differences for valuable cards