Whenever an opponent mills a nonland card, if this creature is in your graveyard, you may return it to your hand
If you're worried about losing life from fetchlands, why not just go with the financially painless Evolving Wilds + Terramorphic Expanse at the cost of them putting lands in tapped (not that that matters, as long as they shuffle) or Ghost Quarter so you don't have to pay life
Overall, Boreas Charger is worse than Knight of the White Orchid both for being clunkier to use and also for being 3cmc instead of 2cmc (I much prefer my ramp at 1-2cmc), but it's still a great card in a few different archetypes and should see a good amount of play
If not, I suppose it could be a decent retirement fund depending on how much I spend, but I honestly cant imagine getting rid of them
The first edition stamp is the icing on the cake for this unexpectedly decorated Bulbasaur card