You could include someone who can drag out fights with pest debuffs and/or squad defensive/healing buffs so that Sparaxis can keep swinging away. Original Nerine has both of the new healing abilities (+15% HP for one Knight who was attacked, +30% for the squad every three turns) along with +40% defense, 1.28-1.36x skill proc, +20% skill damage and +30% attack. X-Mas Nerine has -70% pest crit chance, -50% pest power, 1.2x skill proc, +20% attack, and +30/35% crit bonuses.