The evidence are the cool mechanics like repartee, opus, and flashback, along with revamps of much-loved spells
Landfall We have Landfall returning, a very significant strategy in Limited, since our land availability is key to the game's development
If the artifact token was already a creature, its base power and toughness will become 3/1
This is a list talking about what people have worked (on design and/or development) for the most sets
When looking for "card draw", for instance, it's really easy to miss cards like Fact or FictionFact or Fiction or Militia BuglerMilitia Bugler because they don't actually include the word "draw"
All of these cards have solid synergies (Obzedat + Whip, Varolz + Bestow, Duskmantle + Dimir/Azorius Charm)