Scale up your gems in the midgame, usually using Sanguine Refiner but Rylak Metalhead + Moon-Bacon Jazzer works too. Then, pick up your core pieces for the Combat Scaling Quilboar board. Three lil' Quilboar adds a ton of gems to your boars in combat, while Titus Rivendare and Needling Crone each are multipliers for this effect.