For some spells and abilities, that means you'll scry last
In other words, your opponent will know the targets of your original spell and your copy when choosing the new targets, if any, for their copy
There are only five MTG cards that, before The Twelfth Doctor, even mentioned the Demonstrate mechanic: Creative Technique Excavation Technique Healing Technique Incarnation Technique Replication Technique These five cards all originate from the Strixhaven: School of Mages Commander expansion, otherwise known as Commander 2021
The intricate strategies of Magic lie not only in the tactical gameplay of cards, but also in the construction of a player's deck
While this is my opinion, it is validated by Cardboard by the Numbers research
It means that this card serves quite well as a commander, because of Commander Damage, but youll need to be able to defend them to get the most out of them