I'm Not Drawing Extra Cards, I Swear 3W
When ~ enters the battlefield, you may search your library for any number of plains cards and put them into your hand, then shuffle your library.
You may play with plains cards in your hand revealed. Those cards do not count towards your hand size.
When you discard a plains card, you may reveal it and put it into your hand.
But I get that you're trying to mitigate discarding cards in some way. I'm pretty sure I can come up with an infinite for this if they return to hand when discarded..
I'm aware of Endless Horizons. I play Endless Horizons. My card was a joke.