You just never miss a land drop, even out to double digit lands
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
It also produces a creature token when it enters which is (once again) great for decks that want fodder to sacrifice
You cant counter it, and you cant remove it the turn it comes down, so its hard to deal with it efficiently
And whenever the final chapter of a Saga you control resolves, you reveal cards from your library until you find a Saga, then put it directly into play once each turn
The requirements are much simpler and the power level is slightly higher, but theyre unlikely to find a permanent place in faster formats