how to tell the value of yugioh cards Discovering Hidden in Old Yu-Gi-Oh 12 Most Valuable Yu-Gi-Oh! Cards

Valor Valor is one from the Judgment cycle, which give your creatures an ability while in the graveyard

While it only affects artifacts and creatures, the effect is instant, and is reliable enough given the amount of both in your average Commander decks

Remove from play a number of card(s) in your Graveyard equal to the number of counters on this card to destroy that same number of Spell or Trap Card(s) on the field

This leaves Beseech the Queen as a (mostly) unconditional tutor for any color, which is potentially very scary indeed

But, Mondrak, Glory Dominus does have an ability to give it an Indestructible counter to better protect it

In a single day, buyers purchased more copies of this card than had sold in the previous five months, with an average of 33.1 copies per buyer