Mind's Dilation

Whenever an opponent casts their first spell each turn, that player exiles the top card of their library.
If it's a nonland card, you may
cast it without paying its mana cost.

"The syntactical nature of reality, the real secret
of magic, is that the world is made of words.
And if you know the words the world is made of,
you can make of it what you wish"
—Terence McKenna