yugioh hydradrive deck FIRST EVER Hydradrive Scabbard | Yu-Gi-Oh! Wiki

Much like Charmander, it became a fan favorite, hence why its price is so high

You cannot activate other cards or effects during the turn you activate this card's effect

Pull rates are low: you usually see around one Manga Rare card per sealed case (12 booster boxes), so roughly one hit in about 288 booster packs

Garruk became the second four-loyalty-ability planeswalker

As Commander is a Highlander format meaning that there can be only one copy of any card in a Commander deck, minus basic lands the same name restriction on this card is avoided by default

The only other source left to mention is the short story The Going Price from the Tapestries anthology