Wizards of the Coast (WotC) found a stash of Legends boxes in a warehouse and decided to turn the stockpile of cards from 1994 into a promotion that helps celebrate the games 30th anniversary
Theres no opportunity cost to doing so since snow-covered swamps are functionally identical to normal swamps, meaning this card can easily be firing on all cylinders at all times
Its a merfolk when you need it to be, providing a simple but effective way to up your creature count for cards like Svyelun of Sea and Sky or Tishana, Voice of Thunder
If you do, set aside the top six cards as your prize cards think of these as your win condition
Unlike a normal mana-curve with more cheap stuff, here we'll want a few of most casting costs as well as just more creatures in total doing stuff, from card draw to removal to ramp
That doesnt make it a bad card