Airship Crash Effects like these can be a bit difficult to assess early on, thanks to only destroying a set number of things
I will say this, though: it's awfully Golgari
Thankfully, over the past decade, even Wizards has realized that partners are pretty broken, and now they avoid printing more cards with the mechanic, instead relying on various partner-with-style mechanics that do something similar but with a much smaller pool of cards to choose from, like how you can partner a Doctor's companion with a Doctor from the Doctor Who set
Enchantress payoffs like Hallowed Haunting, Nylea's Colossus, and Setessan Champion lend themselves well to an aggressive shell with this Selesnya commander at the helm
Each player has an opportunity to cast an instant spell (or activate an activated ability) in response to any spell or ability that goes on the stack
Cards good