yugioh 1st edition rare cards : DOCS-EN020 Ed Sphere Kuriboh Card Spellcaster/Effect PSA 10 - Yu-Gi-Oh Card

If you stack the triggers correctly, you can sacrifice a Butcher Ghoul with Yawgmoth and return it to the battlefield before targeting it with Yawgmoths ability that you just placed on the stack, removing the +1/+1 counter the Ghoul gained, making it ready to die and return again

[17] Websites like Card Marvin can easily help you figure out how much your collectible is worth simply by punching in your card's information

Greninja ex can be obtained from Mega Rising: Mega Gyarados pack in the Mega Rising set

Currently, it is projected that Crimson Vow will have a lower expected value than Innistrad Midnight Hunt

For more on the process, see our guide to buying ONE PIECE cards from Japan