If a creature in combat has first strike or double strike, you can activate the library ninjutsu ability during the first-strike combat damage step
A 1st Edition Charizard could be worth $300,000 in top condition, while a standard Charizard is worth $6,500
In fact, marketing experts recommend 16pt stock because the difference in feel and marketing value is immeasurable
For example, if you see an opponent get out to an early start (a turn one Sol RingSol Ring, perhaps), Id recommend cursing them first
MTG Vendors Moving on from retail pricing, there are plenty of well-known Magic vendors like Star City Games, CardKingdom, or TCGplayer willing to sell boxes for under $100
Will Storm's return to Standard break the format and ruin Magic