it counts players that took damage, not the damage itself
You can check out the cards from the Warhammer 40,000 Commander decks in the Card Image Gallery
If it's a likely hit for Standard or Modern but a swing and a miss for formats like Commander and multiplayer, then it's not here
In the early game it's just a five-mana Damnation, and in the mid-game it's an okay sweeper with a few dorks, later you can play around it and really push the board your direction
This blog is all about hitting land drops, so giving your opponent one is not what I am interested in
Here are my general guidelines for deciding whether to name Human, Illusion, or Wizard in those spots: If you have an Aether Vial on the battlefield, you should prioritize Mantis Rider or Deputy of Detention above Phantasmal Image