Something like:

Code:
/castrandom [target=ToonA,help] Renew, , , ,
/castrandom [target=ToonB,help] Renew, , ,
/castrandom [target=ToonC,help] Renew, , 
/castrandom [target=ToonD,help] Renew, 
/cast [target=ToonE,help] Renew