We have, of course, seen cards with abilities like these played consistently in competitive play, so its quite possible Pluto will see play as well
We wont get into the details here, but it could be a nice wrinkle to add to your precon vs
5 Epicenter While most land destruction cards are destruction-based, Epicenter is unique in that it forced a land to be sacrificed
In addition to this, any time you cast a spell that targets one or more creatures, those creatures gain Flying until the end of the turn
Consider what cards you might include that are both mana efficient and grant late-game reach
The cards I mentioned above go wild with doubling your board presence, to tutoring legends and defending them from extinction, to rewarding smart sequencing or passive lifegain