With 20 mythics, a rare to mythic ratio of 7:1 (to maintain the 1 in 8 chance of cracking a mythic), and 2 copies of every rare per sheet, that means there are 70 different rares total, a 1 in 80 chance per pack of opening any rare, and a 1 in 160 chance of opening any mythic
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a spectacle cost), add any cost increases, then apply any cost reductions
YES German Strategy Cards 1997 - Portal 1: Support Cards SET NUM CARDNAME ARTIST SOURCE DATE INFO 001 Lufthoheit Version 1 Air Superiority Strategy Card Version 1 German Portal boosters 1997-
: If this creature is a Warrior, it becomes a Kithkin Spirit Warrior Avatar with base power and toughness 8/8, flying, and first strike
Hedron Archive
They then tweaked it so that it was reduced by its mana cost on the turn it entered, even if it wasn't cast