Pyromancer Ascension

The copy is created on the stack, so it’s not “cast.” Abilities that trigger when a player casts a spell won’t trigger.

The copy will have the same targets as the spell it’s copying unless you choose new ones. You may change any number of the targets, including all of them or none of them. If, for one of the targets, you can’t choose a new legal target, then it remains unchanged (even if the current target is illegal).

The second ability triggers only if Pyromancer Ascension already has two quest counters on it at the time you cast an instant or sorcery spell. This means a spell can’t cause the second counter to be put on Pyromancer Ascension and then become copied. It also means a player can’t remove Pyromancer Ascension in response to you casting an instant or sorcery spell in order to prevent the ability from triggering.