you should be able to always see the numbers on your hp/mana bars, the hud should also tell you how many minions of each type you control at the moment.
Self casting is also needed, by clicking on your portrait AND via a combo of buttons (alt + number for exemple)
There should also be portraits of you allies with their hp/mana bars, and you should be able to cast a spell on them by clicking on it.
Timers for silence and shield would also be usefull, but are less important, the devs could as well decide that you have to pick the timing yourself for that one.