For the holos and rares, the raw Youtube data from 11 boxes was as follows (the dashed line showing where the transition from H6 to H5 and from R6 to R5 would occur): image396693 10.6 KB image396724 11.3 KB There isnt enough data to say anything definitive about individual card rarities here, but I would not be surprised if all the R5 cards were Trainer cards
Seven Kids: Protection for the Field is fine and definitely removing the opponent's biggest monster always helps (and burning for it)
Fun fact: you put counters on planeswalkers as they enter the battlefield, which means that if you followed this five-mana enchantment with a six-mana planeswalker, you could deal six damage to your opponent or a planeswalker or creature they control
In even the best deck-building games, there are no hard and fast rules for ratios
Its always best to look at images or see cards in person if you can so that you can verify the quality of the card yourself
Unfortunately it's not the one from the CD Drama, but a semi-insectoid clown would probably ruin the suspense, adorable as it is