7 cards where the card is tagged “synergy-proliferate”

Contagion Dispenser (Alchemy: Phyrexia #19)
Ezuri, Stalker of Spheres (Phyrexia: All Will Be One #201)
Ichor Aberration (Alchemy: Phyrexia #23)
Scheming Aspirant (Phyrexia: All Will Be One #107)
Tekuthal, Inquiry Dominus (Phyrexia: All Will Be One #71)
Venser, Corpse Puppet (Phyrexia: All Will Be One #219)
Voidwing Hybrid (Phyrexia: All Will Be One #221)

This search is finished. Now the real work can begin.