Losing Once Upon a Time, while integral for maintaining the consistency of curving one-drop into three-drop, isnt a death sentence
The Twelfth Doctor gives everyone a chance to cast your spells, giving the first spell you cast Demonstrate and the possibility to fill your board with copies of your spells
Your maximum hand size is normally seven cards, and you typically start with an opening hand of seven cards
High Utility, Low Price Veteran Explorer Chasm Skulker Hushwing Gryff Windborn Muse Progenitor Mimic Swords to Plowshares Beast Within Cultivate Kodamas Reach Sylvan Reclamation Seeds of Renewal Rites of Flourishing Empyrial Plate I remember a few of these being more in the value category, but they were reprinted enough times in the intervening years to drop, which is a great thing for the players
The fact that these can come in untapped and provide colour means you don't really need that much else for the card to be strong and yet we got a fair amount of extras
Some legendary creatures will be making a shift down in rarity, as well, though Verhey did not say which
