Grab that Weezing, stick it on top of this pricier Shining Vault Koffing, and get to poisoning
This one is not a slam dunk like the next card on this list (and almost every one thereafter), but I do think that a deck that wants to make an Army might want it, especially out of the side
Funnily enough, this also picks up -1/-1 counters, finality counters, stun counters, or any other detrimental counters that end up on your creatures
Lastly, if your deck is already doing shenanigans with extra attack steps, then you get bonus benefits from Eriniscards like Aggravated Assault and Moraug, Fury of Akoum
If the spell has multiple targets, a given creature must be a legal target for all of them or else a copy wont be created for that creature
But one of the biggest spoilers yet dropped yesterday, on March 24