These documents tell you what you can and cannot do at an event (even if the event is occurring remotely) and give you a good idea of what to expect
The most notable from Zendikar Rising was Sneak Attacks general, Anowon, the Ruin Thief
Aerial Modification: It would have been amazing at a lower casting cost just because it would have saved you all that tapping to activate vehicles
C Common Oyster Meister X WATER Level 3 [ FishEffect ] ATK 1600 DEF 200 If this card is sent from the field to the GY, except when destroyed by battle: Special Summon 1 "Oyster Token" (Fish/WATER/Level 1/ATK 0/DEF 0)
And it broke the game's clock system since in tournaments, when a round goes to time, players get five more turns to finish the match, which doesn't work very well if one of those turns can be an hour-long Nadu loop
The War Doctor can become a potent attacker depending on how many cards you manage to phase out from either side of the field