Considering tutors are often either setting up a winning turn or a desperate move to search for land, dropping an Opposition Agent at the right time can be stone-cold brutal
It's pretty clearly a deliberate joke, because Wizards of the Coast virtually never gives reminders for basic evergreen abilities like vigilance or haste
Amass Rules A keyword action that gives you a Zombie Army creature token or grows an Army you already have
I honestly think that Lantern is still a deal at $4demand for that card is seemingly endless, and one reprinting in one Commander deck wont affect that
Then, once this ability activates for a second time, you can reveal the top card of your library until you hit an Elf or Elemental card, putting that card into your hand
This means that Skyshroud Claim can search for nonbasic Forest cards like dual and tri-lands that have the Forest type, and you can use the mana immediately thanks to the lands coming into play untapped