While perhaps different now thanks to the London mulligan rule, in the past, people have calculated that your odds of winning when you mulligan to six (so starting with one less card than your opponent) is 40%, which might not sound like a lot, but considering that the odds are 50/50 with each player starting with an equal number of cards in hand, it's actually a 20% shift in your chances of winning the game
Stoneforge is therefor also diminished in power
A mythic rare often changes how the entire game plays out the moment it resolves
Vampires often care about lifegain , with lifelink and similar abilities intermingling flavorfully with the idea of drinking a victims blood, literally gaining strength from dealing damage
We heard about little Bracket 1 play initially
Until end of turn, you may cast that card