Talus and Skye are not the best flanks vs Dredge. He is vulnerable against champions who attack from above where his slow projectiles can hardly hit them. And he will teleport to high ground when attacked. Maeve, Andro, Drogoz, etc. are good counters

Avoid long duels vs Buck. Charge and burst him down or run. Fight Buck with a pillar or an obstacle between you and him and you will lose if he gets out of cauterize to heal up again.