one of the hardest things to grasp about Magic, in my experience, has always been the fact that just about any rule you care to name can be deliberately ignored or circumvented by using the right cards at the right time
Amazons price makes it a rare under-market value buy
5 mana so easily becomes 20+, and while its all red, thats still usually enough to get really far ahead, assuming you dont just win on the spot
#3 Mega Zygarde ex Special Illustration Rare Mega Zygarde ex ME03: Perfect Order Special Illustration Rare Market Value Loading
Note, though: we're not including any Partners With, Choose a Background, or the Universes Beyond -specific partner mechanics (looking at you, Doctor Who and Stranger Things)
Then you've got the Reanimator pattern where Black tries to cheat a big thing out