all mtg sword cards Excalibur, of Eden · Assassin's Creed (ACR) #72 · Scryfall Magic: The Gathering Search MTG Proxy Commander Staples Pack:

But luckily for our Mordor-loving black hearts, Nazgl has deathtouch, which could discourage blocking and allow your Ring-bearer to attack and take advantage of some of the other levels of the Rings power each combat

Its main purpose is stopping cascade which lets players cast spells from exile, which makes Jailer a great answer to things like Living End and Crashing Footfalls- two top tier deck in Modern

Of course it was outclassed pretty quickly in that role, and it was never that good anyhow

Since it's not instant speed it's not reliable enough removal to use when you need it

If you cast the spell as its adventure version, the card is placed into exile, and you can cast its non-adventure side from exile

Still, even in a format as vast and wonderful as Commander, most decks fall into a recognizable deck type