Later we'd get the pricey Shifting Loyalties, or the flexible but pricey Shifting Loyalties
On average, moving from 55% to 60% wins nets you 80 gems (i.e., you lose 80 fewer gems)
I mean, whats the point of ramping out a ton of mana if you have nothing in your hand that you can cast using all that mana

Szarekh, the Silent King 30 Swamp Anrakyr the Traveller Arcane Signet Barren Moor Beacon of Unrest Biotransference Caged Sun Canoptek Scarab Swarm Canoptek Spyder Canoptek Tomb Sentinel Canoptek Wraith Chronomancer Commander's Sphere Convergence of Dominion Cranial Plating Cryptek Cryptothrall Darkness Defile Desert of the Glorified Dread Return Endless Atlas Flayed One Ghost Ark Gilded Lotus Go for the Throat Hedron Archive Hexmark Destroyer Illuminor Szeras Imotekh the Stormlord Living Death Lokhust Heavy Destroyer Lychguard Mask of Memory Mind Stone Mutilate Myriad Landscape Mystic Forge Necron Deathmark Necron Monolith Necron Overlord Night Scythe Out of the Tombs Plasmancer Polluted Mire Psychomancer Reliquary Tower Resurrection Orb Royal Warden Sautekh Immortal Sceptre of Eternal Glory Sculpting Steel Shard of the Nightbringer Shard of the Void Dragon Skorpekh Destroyer Skorpekh Lord Sol Ring Technomancer The War in Heaven Their Name Is Death Their Number Is Legion Thought Vessel Tomb Blade Tomb Fortress Trazyn the Infinitea Triarch Praetorian Triarch Stalker Unstable Obelisk Vault of Whispers Wayfarer's Bauble NEXT: Magic: The Gathering Warhammer 40,000 Commander Deck Previews: Tyranid Swarm

A couple of highlights from this bonus sheet are Faithless Looting, Lingering Souls, Mayor of Avabrook, and Falkenrath Aristocrat
it is owned and operated by Wizards of the Coast