yugioh valkyrie deck Amazon.com: Complete Custom for Yu-Gi-Oh! Valkyrie Vierte (Yugioh Savage Strike)

This one is a set you'll want to buy for your love of music and the artwork

at the end of your turn if this card is in DEF change it to attack then you gain 500 LP

Currently its only been printed in one set in the highest rarity possible, giving it a hefty price tag of $120 a copy (as of this writing)

Jirina both creates Humans and pumps all of your Humans to make them into more formidable attackers

Spikes will be quick to remind you as well that, since you control the player as they(you?) tutor, they even get to look at your hand as a little free bonus

Magiclibrarities has a great write-up on the set for those who aren't familiar with it, but the short version is that WotC tried to do a reworked version of Revised Edition which fixed many of the issues with that set (cropped-off bezels on the card frames, overly light printing, wrong color and art on Serendib Efreet, etc.) but introduced enough new mistakes that they wound up junking almost the whole run, causing a massive shortage of Revised and letting only a few cases of this set get out