Theoretically, you can play Snapcaster Mage, trade with an opponent's 2/2, and then cast another instant or sorcery from the graveyard all in the same turn
I wouldnt run this treefolk druid in every green deck, but Id almost consider running green lifegain just to have a reason to use this card
Activated abilities of creatures that include a tap symbol in its cost require continuous control over the creature since the beginning of the players most recent turn: 602.5a
Since Peer Past the Veil is still on the stack while it's resolving, it won't count itself
It doesn't copy whether that creature is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, and so on
MTG would have a much more standardized art style as it goes on, which is in my opinion is quite good for the franchise