Haven comes in untapped, and although it can only make colourless Snow Mana, in an actual game it often doesnt affect the players tempo or game plan
Celes, Rune Knight Celes, Rune Knights main ability is to discard your hand and draw new cards, and it effectively sets up many synergies: discard, draw, combos, unearth, reanimate, you name it
For instance, if you are a Stax deck and you play down a Rule of LawRule of Law, you probably don't mind so much when you get a Stony SilenceStony Silence instead
In War of the Spark, Nissa might as well be a statue
Legacy has gotten so fast that threshold decks have been reduced to playing only Nimble Mongoose and Werebear, but originally there was a third creature in that group
His ceiling is likely to be $30 with peaks at $35, but Id expect him to sit more in the $15-$20 range like Thassa, God of the Sea