It’s simple to destroy arrow carts, as you say “Dragon’s Tooth” (2 on scepter) – party ele+some1, firts need to get target ac (some1 can do it from higher ground) next Ele take target and hitting them using ’Dragon’s Tooth (using this skill you don’t need to see the target). Only trouble is range (it’s about 900 or something about) – any siege on walls or near it Ele can easly destroy.