The second reason why this card tops the charts is that it is unique among all other lands, and because of that, is a necessity in Vintage decks like Dredge, which wants cards in the graveyard early in the match
The biggest, and I mean biggest weakness of blue was being vulnerable while tapped out
When it attacks, you untap all Snow permanents you control (which includes Jorn himself, as he is a Legendary Snow Creature)
But I was in love with what I thought the card could have been
Most of these effects in newer constructed formats, like Yathan Roadwatcher, have casting restrictions for a reason
Bloodbond March helps with both of these issues: it will reanimate all copies when you cast another, meaning youre guaranteed to eventually get enough on board