Please review this document carefully
Certain cards, like the Espeon Star and Umbreon Star from POP Series 5, do not currently have available market prices on TCGplayer and thus cannot be included
The War Doctor can become a potent attacker depending on how many cards you manage to phase out from either side of the field
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
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