Due Blue having way copy the item in several ways, it goes too powerful causing opponent owning spell to basically nullify table. Sofar only white has some artifact removal, and for green its only 1 spell thru current standart to remove artifacts, which leaves green absolutely vulnerable in BO1, for BO3 you could (if owning side board Decite) - but anything else there is none to withstand this deck.
Giving a card powers like this brings card to "favored" and overpowered state, using then "Simulacrum Synthesizer" - for ALL COPIED Pinnacle Starcage's , person will have nice 10/10 or more tokens. while other opponents have to face empty table.

As Pinnacle Starcage is too powerful in conjunction with blue , lets name it is affinity to blue "copy spells" it should get either nerf in wording, not to have more than 4 copies of one spell on battlefield or banished from Standart format.
Check up "artifact copy" and how many u can munster up...

it is irritatin how slow is reaction to this kind of combos to be "removed" , it took whole year to decide for ViV's decks roam free and cause frustration, same now with Pinnacle Starchage, Simulacrum Synthesizer and OP-d spell Three sterps Ahead