yugioh mathmech deck Division - Yu-Gi-Oh! Card Database Mathmech Deck Breakdown | Guides,

Having a card thats incredibly good in Limited is usually a sign that it will be good enough for Constructed as well, although its not always the case

cataloging a collection is not its strength

You must announce the method of payment for the spell when placing the spell on the stack

Excadrill ex $26.43 A Bright Future Ahead Excadrill might not jump out as an obvious choice to include as a Special Illustration Rare in Black Bolt, but since both White Flare and Black Bolt had to share Pokemon from the same Unovan pool, it inevitably meant some underdogs would get extra love

I think the main use is to give protection from a removal spell for 2 mana, which I believe is a filler combat trick or mostly a sideboard card