They play nearly the same roleChampion has less up-front cost but requires a little more windup, while Craterhoof wins on the spot, as long as you've laid the groundwork in advance
Two mana: deal 1 damage to a player and draw a card is one of the best activated abilities of all time, given how cheap it is
That said, in Duskmourn where different types of cards matter, its helpful to send a specific kind of card to the graveyard, like creatures
Double Major is hands down one of the most dangerous cards in the set, and one I expect to see a lot of going forward
But for both set one and two of Lorcana, it was the bronze rares that established themselves as staples with the board wiping Be Prepared of set one and the hasty 4 willpower and three health Madame Mim, Fox of set two