pokemon trader cards - Legendary Collection Trade 1 of the Basic Pokemon or Evolution cards in your hand for 1 of the Basic Pokemon or Evolution cards from your deck Is Cardtrader the CHEAPEST Place

These were basically the bonus cards during the earliest iterations of Secret Lair drops

Simply put, the card shop "should have suppressed the rise in secondary market value to at least avoid causing trouble for the collaboration partner." Since there was an announcement from McDonald's official channels, if they had complied with it, they could have at least maintained a minimum level of corporate ethics

War of the Spark Uncommons / Commons / Bulk The uncommons from War of the Spark are, as predicted, better than normal thanks to the uncommon planeswalkers greatly increasing the number of uncommons that have some amount of value

The printing error that hit these cards is the fact that they weren't actually holographic as advertised

The Maestros mechanic introduced in that set was casualty, an effect that lets you sacrifice a creature to copy a spell

Thankfully, this is a fairly simple question to answer