Astarion may have a high mana value, but his lifegain and drain abilities make him a perfect fit for Orzhov
Thanks again to Ravensburger for providing the decks
Mardu Ascendancy
Jace Beleren Jace Reawakened Jace's Archivist Jace's Defeat Jace's Erasure Jace's Ingenuity Jace's Mindseeker Jace's Phantasm Jace's Projection Jace's Ruse Jace's Sanctum Jace's Scrutiny Jace's Sentinel Jace's Triumph Jace, Arcane Strategist Jace, Architect of Thought Jace, Cunning Castaway Jace, Ingenious Mind-Mage Jace, Memory Adept Jace, Mirror Mage Jace, Telepath Unbound Jace, Unraveler of Secrets Jace, Vryn's Prodigy Jace, Wielder of Mysteries Jace, the Living Guildpact Jace, the Mind Sculptor Jace, the Perfected Mind Oath of Jace
The graveyard should function as an extension of your hand