>>47312387I had forgotten about Solgalel's grid. I went for all the possible Atk and Sunsteel Strike nodes I could get along Sync Move nodes but I don't think I'd pick Sync Freebie. The damage is way lower than I expected though, if I'm doing this correctly, is slightly lower than Focus Blast even when hitting Super Effective:
Base: Sunsteel Strike
Power 138 193
Raw 487,518
4387, 4436, 4485, 4533, 4582, 4631, 4680, 4728, 4777, 4826, 4875