Kaervek is the single most feared Black and Red card ever printed
At least you can play this in goblin EDH decks
Fated Clash Final Showdown Flawless Maneuver Frontline Medic Gavony Gideon's Phalanx Gideon, Ally of Zendikar Gideon, Martial Paragon Gimli, Mournful Avenger Grand Crescendo Gyome, Master Chef Hajar, Loyal Bodyguard Hakoda, Selfless Commander Heliod, God of the Sun Hero of Goma Fada Hour of Devastation Impervious Greatwurm Inspiring Call Iroas, God of Victory Join Shields Kamahl's Will Kamahl, Heart of Krosa Karfell Kennel-Master Keeper of the Crown (adventurer)(playtest) King Darien XLVIII Knight Exemplar Knight of Lost Causes (playtest) Krang, Utrom Warlord Kytheon, Hero of Akros Last Night Together Lena, Selfless Champion
But this really shines in decks that can make it unblockable, moments where you can pick on a player without defense to remove them from the game, and when it can be reanimated attacking as with Kaalia of the Vast and other such cards
Mienshao basically has one move that can do something no matter what other cards you have in your deck, I would try and have a few Pokemon with free retreat costs in my deck, use that Pokemon for awhile and then when the defending Pokemon is close to getting knocked out, move Mienshao in there and use Meditate to knock it out, Mienshao's retreat cost is low so you could retreat it back the next turn