The exact capabilities of Custodes aren't spelled out in detail, but I thought that Custodes also needed their own creature type
Nevertheless, here are your best shots of fixing curved cards: The DIY Approach: Card Pressing For minor curves, the old-school card-pressing method might be your best bet
For Pokmon trading cards collectors : this Throh Reverse 51/101 card is considered as Common Pokmon Card card.
Some of the more traditional creature types, such as [c]Elf[/c], [c]Goblin[/c], and [c]Merfolk[/c], have many cards that encourage you to focus exclusively on one creature type
Everything that I said at the time still applies
If the seller becomes evasive or unresponsive, escalate