maat yugioh card n9 Ma'at Secret Rare Set of 3 Yu-Gi-Oh Treasure 3枚 (Used) （1545619199）| magi -TCG Marketplace- Feather of Ma'at - A

With the assistance of the decks Leader effect courtesy of the Leader card from 500 Years in the Future [OP-07], Kaku can immediately KO one of the opponents 4-cost Characters

For the card to offer value it needs to be recurred a few times which makes it very slow and finds its home most often in control decks or mid range decks that know they will face weenie decks

Because Wizards has a major problem in this area, something that I've talked about before and has been widely known and discussed for years

In general, this requires a minimum of sixty cards in the deck, and, except for basic land cards and cards that have text superseding this rule, no more than four cards of the same named card