The ability to swing in the air for four lifelink-ing damage on the 4th turn was incredibly game changing
Doctor Who also gave us our first adventure card that wasnt a permanent
Aang, at the Crossroads's delayed triggered ability won't cause it to transform back into Aang, at the Crossroads if it has already transformed into Aang, Destined Savior, perhaps because several creatures left the battlefield in one turn
There are clear symbols for a card's cost, attack, and defence - as well as a more mysterious symbol found on the bottom right of each card
We are seeing a lot of activate only as a sorcery or triggers only once each turn on commanders
Players are guaranteed to get an Illustration Rare version of one of the Starter Pokmon during their tutorial, with Bulbasaur being a personal favorite