Are Multiverse Legends Legal
Teysa, Orzhov Scion Teysa, Orzhov Scion gives you an excellent incentive to play small creatures and tokens without giving you ways to do so
"More fun" in this context means "more chances to make that crazy play you imagined when you were building your deck, but which would only be possible if you combined many cards and/or had a lot of mana"
Starfall Invocation lets you retain some of that as you deal with your opponents, so its a nice new option to have
Its difficult to target thanks to the ward ability and will produce a powerful army of orcs on its own, which is a focus of Sauron, the Dark Lord in Commander
This isn't a triggered ability (so you can't play the Glade and then tap it to pay for that cost), it's a cost that you'll have to pay alongside playing the land itself if you want it to enter