- wand direct hits have a chance to stun/set on fire/freeze
- if you force attack a cloud or puddle(blood/water+aero, oil/goo+fire) they'll 100% electrify it/set it on fire/freeze it
- can't say for sure, but seems like hitting a shocked enemy with blood with attacks that cause bleeding will 100% electrify the puddle he is standing in
Those are the interactions that I know of.
