That said, if Im putting the effort to play an expensive commander in the worst ramp color, Id much rather have something like Avacyn, Angel of Hope or Elesh Norn, Grand Cenobite
That said, having a Thran Dynamo or Sol Ring plus Scavenger Grounds for the three colourless Adamant ability means that youll be getting something crazy from your graveyard easier than youd think

Advanced Search Sets Random Syntax Academy Elite Aegis of the Legion Aerith Rescue Mission Agent's Toolkit Ammit Eternal Apocalypse Hydra Arcbound Javelineer Arcbound Reclaimer Arwen, Mortal Queen Ashling the Pilgrim Baku Altar Barkhide Troll Baton of Courage Belligerent Hatchling Benevolent Hydra Bewitching Leechcraft Bloatfly Swarm Bloodcrazed Hoplite Bolrac-Clan Crusher Bounty of the Hunt Brambleback Brute Brigone, Soldier of Meletis Bristlebane Battler Burdened Stoneback By Gnome Means Carnifex Demon Catti-brie of Mithral Hall Chainbreaker Chamber Sentry Channeler Initiate Chaotic Goo Charforger Clockwork Beetle Clockwork Condor Clockwork Dragon Clockwork Hydra Clockwork Vorrac Cocoon Conductor of Cacophony Creakwood Safewright Crovax the Cursed Cruel Sadist Cryptic Trilobite Crystalline Crawler Custodi Soulbinders Darwin, Adaptive Mutant Deathbringer Thoctar Deathspore Thallid Decimator Beetle Deep Forest Hermit Defiant Greatmaw Deity of Scars Deluge Virtuoso Descendant of Masumaro Discordant Spirit District Mascot Drakestown Forgotten Dyadrine, Synthesis Amalgam Edgar Markov's Coffin Elvish Farmer Encumbered Reejerey Entrails Feaster Epochrasite Etched Oracle Etched Slith Exemplar of Strength Experiment One Fain, the Broker Fertilid Festercreep Festering March Fishing Pole

And it's not like these cards are better than the Mewtwo cards
FAERIES: SMALL LOSERS Faeries are losers when it comes to ECL support
Exeggcute (Mythical Island) is not available in Rare Packs