Ellania, Secrets Foretold

Draw an additional card during your draw step.
You have no maximum hand size.
{t}: Target opponent discards a card at random.
If it is an instant or sorcery card, you may cast it
using any combination of mana. Activate this
ability only any time you could cast a sorcery.
"Me? I find you to hold back my acquisition of truth.
I'm going to help you with what I learn, but just know
that no information will ever come free."