The real value is when you cast it for its disturb cost, however, giving you a pseudo-Lier, Disciple of the Drowned effect
Wanted in pretty much any creature deck as a way to create a lot of mana, this shines in elves, but plenty of other EDH and Legacy/Vintage decks can make do with it
This menacing shadow holding two sharp weapons with crazy eyes and a terrifying grin seems to have come from some evil Halloween cartoon
Once in a while, this might not just win and will instead let one person figure out how to order a bunch of comes-into-play triggers while everyone else twiddles their thumbs and someone else tells everyone not to just concede yet because they have a sweeper, only we still have to wait for everything to resolve
Yawgmoth, Thran Physician Yawgmoth, Thran Physicians proliferate ability is easy to activate multiple times in a turn, meaning you can quickly get your opponents to 10 poison counters
Part of numerous infinite combos, the X spell, Ballista can play board control of player control, depending on your mana situation