It basically allows you to board and plunder your opponents symbolic ships
Its an enters-the-battlefield effect, so itll only happen once, but sticking this 4/4 Orzhov flier to an empty field after it destroys every other creature cant be that bad
Ellie and Alan, Paleontologists is one of my favorite cards with discover because it has a repeatable effect that can be used multiple times a game and even on the same turn if you manage to untap it and have enough creatures in the graveyard
Not only are you attacking with a 4/4 deathtouch haste, but also creating multiple copies of a creature you exiled
If you prefer to be on the beatdown plan, its a great option for two mana, and the ability to cast it off a Swamp and a colorless-only Nykthos isnt too bad
With any 7th Edition foil under the sun popping off lately, we could be at a tipping point and if our money is finite, we may be able to identify cards from the ones that arent expensive already which ones have the most upside given EDH inclusion