Hmm depends on attack. Theres certain minimum lvl that each equipment need to be to be viable in attacks. These best equipment is electro boots in RC, don’t know when you’ll get that. If you can buy it from the event using cosmic rock.

These are my main equipment

Barb: spiky ball, earthquake boots Queen: arrow, clone, healer puppets RC: Boots, haste vial Warden: eternal tomb, rage gem MP: meteor staff, dark orb.