yugioh 1st edition booster box Yu-Gi-Oh 25th Anniversary Rarity Collection (1st Edition) YuGiOh Legendary Duelists Magical Hero

You may reveal an Ultra Beast card you find there, put it into your hand, and put this Beast Ball in its place

I am also guessing their overall rarity to be 1 in 3 boxes, like the average of all the sets containing them

It was designed by you

Being able to turn Wrenn into a card draw engine later in the game is powerful, for the low cost of adding just a single Nurturing Peatland

is a game where having the most powerful monster on the field does not always mean victory

Magics designers must have underestimated the power of delve, because when the Khans of Tarkir set released, several of its cards were soon banned from several formats due to being too powerful