You cant use it proactively and it doesnt do anything to stop problematic creatures
While it doesnt offer the same explosive pump spell kills as Glistener Elf or Blighted Agent because it has toxic rather than infect, it does do multiple good things
Aggressive or tribal decks may run more, while control decks may run fewer and rely on spells or planeswalkers
Here are 20 cards you can replace Wood Elves with in your deck.
I could probably talk at length about this drop, what it means for the community, and what it means for Wizards business goals, but instead I have a different point I want to make about this series
Just as a little bonus, its ultimate ability is also pure value, giving you an emblem that turns the lands in your hand into flashback-versions of the spells in your graveyard, cause why not