In the Japanese, Korean, and traditional Chinese subsets, each booster pack contains seven cards with two guaranteed Holofoil cards, and the common, uncommon, and rare cards have Mirror Holofoil variants with a Pok Ball pattern
Ureni of the Unwritten This seven-drop on-curve 7/7 flyer with trample is my highest hitting legendary creature, but it's here more for its role as a support card
In fact, the TCG, which was launched by Konami, actually attained the Guinness World Record for being the top-selling TCG in the world in 2009
If you want to exploit the lifegain side of things, you have tons of options
In almost all cases, genuine cards are sold at prices close to market prices