mystic mine yugioh card MGED-EN047 Yu-Gi-Oh! Age Group Mystic MIME Card Alter :

You have Terrakion- EX to deal with Darkrai EX , which will still be widely played in both its own deck and Hydreigon/Darkrai

And having just one colored mana, its easy to cast

Or in Karador, where you can repeatedly access the Awakening Hall side from your graveyard

(Remember them?) For every creature type that's actually on the listthat list is kept in rule 205.3m if you ever feel the need to go look at ita card with changeling is that creature type

Phyrexia: All Will Be One releases February 10 and will be available at your local game store, online through Amazon, and elsewhere Magic is sold

He is also fairly broad unlike a lot of the more interesting cards for deck design and so while he is not a must have for a cube he is a good way to make things more complex and interesting