Dragons Rage Channeler

“Whenever you cast a noncreature spell, surveil. <em>(Look at the top card of your library. You may put that card into your graveyard.)</em> <br> <em>Delirium</em> — As long as there are four or more card types among cards in your graveyard, Dragon's Rage Channeler gets +2/+2, has flying, and attacks each combat if able.”