The board game, due to release on July 31st, contains three different decks themed around Pikachu, Charizard and Mewtwo, as well as guide books to help players learn how to play each one
Flashback gives you more to get on with late game but by proxy will afford you the opportunity to have a stronger early game
Note that they can go back to hand, like with Oversold Cemetery
If that creature is a legal target but the creature you don't control isn't, your creature will still get +1/+2
The simplest repercussion is what R&D calls a saboteur effect, a triggered effect that happens if the creature deals combat damage to the opponent
If you do find yourself in this color however, And finally, you can go the extra turns route to just keep taking turns until your winning upkeep trigger