I start this review by caveating that I am quite new to Magic the Gathering (MtG), with around 100-200 games on MtG Arena and around 10 or so games in person
This can give you a great setup as you will have already burned through at least 13 cards of your deck after using it
Having a checklist, something we could easily mark off, would make it much easier to keep things organized
Since the Beginning of the Next End Step had already passed by the time you activated the ability, the Spirit will stay exiled throughout your opponents turn as well
Lord of the Nazgl and Grma, Saruman's Footman both give some nice support to the spellslinging theme
The ability to choose what modes to select when casting the card makes them highly valuable (both in-game and oftentimes monetarily), as you can tailor their decisions based on your own board state