Nesting Dovehawk is a creature that populates at the beginning of its controllers combat phase
Its prone to running out of steam after a wave of aggression, and it has few ways to bounce back if its win condition gets denied
This is a mechanic with a ton of legs
It's a reference to an argument in the movie about whether a swallow can carry a coconut and carry it as they migrate, depicting the African and European swallows doing just that respectively
Of course, there's a fine line between a smile, a smirk, a grimace, and so on, so you'll have to use your best judgment
She causes every critter your opponent casts and every nonbasic land they play to enter tapped, totally nullifying haste as a keyword and slowing their mana production considerably (unless your opponents prefer to play with the Thriving lands)