Enchantment, B (1) + Text(US+errata): Whenever a card is put into a graveyard from anywhere, remove that card from the game. 1 "Planeswalking isn't about walking. It's about falling and screaming." -Xantcha, Phyrexian outcast
Illus. Andrew Goldhawk
The card does go to the graveyard before it is removed from the game, so other triggered abilities like Energy Field will trigger on the card going to the graveyard. [D'Angelo 1999/01/12]
It will trigger on itself going to the graveyard from play and remove itself from the game. [D'Angelo 1999/01/12]
It will trigger on any cards going to the graveyard at the same time it does, and it will remove them from the game. [D'Angelo 1999/03/06]
If Disenchant is used on it, Planar Void goes to the graveyard (and removes itself), then Disenchant goes to the graveyard and stays there. [DeLaney 1999/01/18]