It has ninjutsu for one black mana and three generic mana, and, when it deals combat damage to a player, you exile the top card of each player's library
One of the original sins of Commander, Crypt was deemed legal from the format's onset, despite being clearly overpowered relative to most other mana accelerants

Bitter Triumph Blast of Genius Blaster Mage Blood Fountain Blood Petal Celebrant Blood Servitor Bloodcrazed Socialite Bloodfire Mentor Bloodrage Brawler Bloodsoaked Altar Bloodsoaked Reveler Bloodsworn Knight Bloodsworn Squire Bloodthorn Flail Bloodtithe Harvester Bloodvial Purveyor Bloody Betrayal Blurry Beeble Bog Witch Bola Warrior Bonded Fetch Bone Shards Boosted Sloop Borderland Explorer Boundary Lands Ranger Brallin, Skyshark Rider Bramble Familiar Bramble Familiar Broadside Barrage Brutal Nightstalker Burning-Fist Minotaur Burning-Tree Vandal Cabal Initiate Cackling Witch Cait, Cage Brawler Calamitous Tide Caldaia Brawlers Call the Bloodline Cam and Farrik, Havoc Duo Canyon Crab Canyon Drake Captain of Umbar Carlo, Suave Schemer Case of the Crimson Pulse Catalog Celebrate the Mountain-king Centaur Veteran Cephalid Inkshrouder Ceremonial Knife Ceta Sanctuary Chain of Plasma Chainer, Nightmare Adept Chains of Mephistopheles Chakra Meditation Chamber of Manipulation Chandra Ablaze Chandra's Defeat Chandra, Spark Hunter Change of Plans Charging Strifeknight Charm Peddler Charming Scoundrel Chart a Course Chase Stein, Runaway Checks and Balances Chivalric Alliance Cho-Arrim Alchemist Chromium, the Mutable Cipherbound Spirit Civilized Scholar Cloudpiercer Cloudseeder

Why not make this holo to give a different variation
It could be argued that this is still the most elusive and sought after Charizard in the Sun & Moon series (yes, even over the Hidden Fates one)
1 Counterspell